Chapter CDLXX: Prologue (121)

TRIFORIUM Tri*fo"ri*um, n. Etym: [LL., fr. L. tri- (see Tri-) + foris, pl. fores, a door.] (Arch.)

Defn: The gallery or open space between the vaulting and the roof of the aisles of a church, often forming a rich arcade in the interior of the church, above the nave arches and below the clearstory windows.

TRIFORM Tri"form, a. Etym: [L. triformis; tri- (see Tri-) + forma form.]

Defn: Having a triple form or character. "This triform antagonism." I. Taylor. Goddess Triform, I own thy triple spell. Lowell.

TRIFORMITY Tri*form"i*ty, n. Etym: [L. triformitas.]

Defn: The state of being triform, or of having a threefold shape.

TRIFURCATE; TRIFURCATED Tri*fur"cate, Tri*fur"ca*ted, a. Etym: [L. trifurcus; tri- (see Tri-) + furca fork.]

Defn: Having three branches or forks; trichotomous.

TRIG Trig, v. t. Etym: [Cf. Dan. trykke to press, Sw. trycka.]

Defn: To fill; to stuff; to cram. [Obs.] Dr. H. More.

TRIG Trig, a. Etym: [Formerly written trick, akin to trick to dress.]

Defn: Full; also, trim; neat. [Prov. Eng. & Scot.] To sit on a horse square and trig. Brit. Quart. Rev.

TRIG Trig, v. t. Etym: [See Trigger.]

Defn: To stop, as a wheel, by placing something under it; to scotch; to skid.

TRIG Trig, n. Etym: [See Trigger.]

Defn: A stone, block of wood, or anything else, placed under a wheel or barrel to prevent motion; a scotch; a skid. [Eng.] Wright.

TRIGAMIST Trig"a*mist, n. Etym: [See Trigamy.]

Defn: One who has been married three times; also, one who has three husbands or three wives at the same time.

TRIGAMOUS Trig"a*mous, a. Etym: [L. trigamus a thrice-married man, Gr. Tri-) + trigame.] (Bot.)

Defn: Having three sorts of flowers in the same head, -- male, female, and hermaphrodite, or perfect, flowers.

TRIGAMY Trig"a*my, n. Etym: [L. trigamia,Gr. trigamie. See Trigamous.]

Defn: The act of marrying, or the state of being married, three times; also, the offense of having three husbands or three wives at the same time.

TRIGASTRIC Tri*gas"tric, a. Etym: [Pref. tri- + Gr. (Anat.)

Defn: Having three bellies; -- said of a muscle. Dunglison.

TRIGEMINAL Tri*gem"i*nal, a. Etym: [See Trigeminous.] (Anat.)

Defn: Of, pertaining to, or designating, the fifth pair of cranial nerves, which divide on each side of the head into three main branches distributed to the orbits, jaws, and parts of the mouth; trifacial.

TRIGEMINOUS Tri*gem"i*nous, a. Etym: [L. trigeminus born three together; tri- (see Tri-) + geminus twin. Cf. Tergeminous.]

Defn: Born three together; being one of three born at the same birth; also, threefold. E. Phillip

TRIGENIC Tri*gen"ic, a. Etym: [Pref. tri- + gen- + -ic. So named in reference to its composition, it being supposed to contain the radicals of three molecules of cyanic acid.] (Chem.)

Defn: Of, pertaining to, or designating, an acid, C4H7N3O2, obtained, by the action of the vapor of cyanic acid on cold aldehyde, as a white crystalline substance having a slightly acid taste and faint smell; -- called also ethidene- or ethylidene-biuret.

TRIGER PROCESS Tri`ger proc"ess. [After M. Triger, French engineer.] (Engin. & Mining)

Defn: A method of sinking through water-bearing ground, in which the shaft is lined with tubbing and provided with an air lock, work being proceeded with under air pressure.

TRIGESIMO-SECUNDO Tri*ges"i*mo-se*cun"do, a. Etym: [L. in trigesimo-secundo in the thirty-second.]

Defn: Having thirty-two leaves to a sheet; as, a trigesimo-secundo form, book, leaf, size, etc.

TRIGESIMO-SECUNDO Tri*ges"i*mo-se*cun"do, n.

Defn: A book composed of sheets so folded that each one makes thirty- two leaves; hence, indicating, more or less definitely, a size of book; -- usually written 32mo, or 32º, and called thirty-twomo.

TRIGGER Trig"ger, n. Etym: [For older tricker, from D. trekker, fr. trekken to draw, pull. See Trick, n.]

1. A catch to hold the wheel of a carriage on a declivity.

2. (Mech.)

Defn: A piece, as a lever, which is connected with a catch or detent as a means of releasing it; especially (Firearms), the part of a lock which is moved by the finger to release the cock and discharge the piece. Trigger fish (Zoöl.), a large plectognath fish (Balistes Carolinensis or B. capriscus) common on the southern coast of the United States, and valued as a food fish in some localities. Its rough skin is used for scouring and polishing in the place of sandpaper. Called also leather jacket, and turbot.

TRIGINTAL Tri*gin`tal, n. Etym: [LL. trigintate, fr. L. triginta thirty. See Trental.] (R. C. Ch.)

Defn: A trental.

TRIGLYCERIDE Tri*glyc"er*ide, n. Etym: [Pref. tri- + glyceride.] (Chem.)

Defn: A glyceride formed by the replacement of three hydrogen atoms in glycerin by acid radicals.

TRIGLYPH Tri"glyph, n. Etym: [L. triglyphus, Gr. Tri-) + triglyphe.] (Arch.)

Defn: An ornament in the frieze of the Doric order, repeated at equal intervals. Each triglyph consists of a rectangular tablet, slightly projecting, and divided nearly to the top by two parallel and perpendicular gutters, or channels, called glyphs, into three parts, or spaces, called femora. A half channel, or glyph, is also cut upon each of the perpendicular edges of the tablet. See Illust. of Entablature.

TRIGLYPHIC; TRIGLYPHICAL Tri*glyph"ic, Tri*glyph"ic*al, a.

1. Consisting of, or pertaining to, triglyphs.

2. Containing three sets of characters or sculptures.

TRIGNESS Trig"ness, n. Etym: [See Trig trim, neat.]

Defn: The quality or state of being trig; smartness; neatness. Their spars had no man-of-war trigness. Kane.

TRIGON Tri"gon, n. Etym: [L. trigonum, Gr. Tri-) + trigone.]

1. A figure having three angles; a triangle.

2. (Astrol.) (a) A division consisting of three signs. (b) Trine, an aspect of two planets distant 120 degrees from each other. Hutton.

3. (Gr. & Rom. Antiq.) (a) A kind of triangular lyre or harp. (b) A kind of game at ball played by three persons standing at the angular points of a triangle.

TRIGON; TRIGONID Tri"gon, n. (Zoöl.)

Defn: The cutting region of the crown of an upper molar, usually the anterior part. That of a lower molar is the Tri"go*nid.

TRIGONAL Trig"o*nal, a.

Defn: Having three angles, or corners; triangular; as, a trigonal stem, one having tree prominent longitudinal angles.

TRIGONE Tri`gone", n. Etym: [F., literally, a trigon.] (Anat.)

Defn: A smooth triangular area on the inner surface of the bladder, limited by the apertures of the ureters and urethra.

TRIGONIA Tri*go"ni*a, n. Etym: [NL. See Trigon. So called in allusion to the triangular shape of some species.] (Zoöl.)

Defn: A genus of pearly bivalve shells, numerous extinct species of which are characteristic of the Mesozoic rocks. A few living species exist on the coast of Australia.

TRIGONOCEROUS Trig`o*noc"er*ous, a. Etym: [Gr. (Zoöl.)

Defn: Having horns with three angles, like those of some species of goats.

TRIGONODONT Trig"o*no*dont`, a. [See Trigon; Odonto.]

Defn: See Trituberculy.

TRIGONOMETRIC; TRIGONOMETRICAL Trig`o*no*met"ric, Trig`o*no*met"ric*al,Etym: [Cf. F. trigonométrique.]

Defn: Of or pertaining to trigonometry; performed by the rules of trigonometry. --Trig`o*no*met"ric*al*ly, adv. Trigonometrical curve, a curve one of whose coördinates is a trigonometric function of the other. -- Trigonometrical function. See under Function. -- Trigonometrical lines, lines which are employed in solving the different cases of plane and spherical trigonometry, as sines, tangents, secants, and the like. These lines, or the lengths of them, are trigonometrical functions of the arcs and angles to which they belong. -- Trigonometrical survey. See under Survey.

TRIGONOMETRY Trig`o*nom"e*try, n.; pl. -tries. Etym: [Gr. -metry: cf. F. trigonométrie. See Trigon.]

1. That branch of mathematics which treats of the relations of the sides and angles of triangles, which the methods of deducing from certain given parts other required parts, and also of the general relations which exist between the trigonometrical functions of arcs or angles.

2. A treatise in this science. Analytical trigonometry, that branch of trigonometry which treats of the relations and properties of the trigonometrical functions. -- Plane trigonometry, and Spherical trigonometry, those branches of trigonometry in which its principles are applied to plane triangles and spherical triangles respectively.

TRIGONOUS Trig"o*nous, a. Etym: [L. trigonus, Gr. Trigon.]

Defn: Same as Trigonal.

TRIGRAM Tri"gram, n. Etym: [Pref. tri- + -gram.]

Defn: Same as Trigraph.

TRIGRAMMATIC Tri`gram*mat"ic, a. Etym: [Gr.

Defn: Containing three letters or characters, or three sets of letters or characters.

TRIGRAMMIC Tri*gram"mic, a. Etym: [Gr. Trigrammatic.]

Defn: Same as Trigrammatic.

TRIGRAPH Tri"graph, n. Etym: [Pref. tri- + -graph.]

Defn: Three letters united in pronunciation so as to have but one sound, or to form but one syllable, as -ieu in adieu; a triphthong.

TRIGYN Tri"gyn, n. (Bot.)

Defn: Any one of the Trigynia.

TRIGYNIA Tri*gyn"i*a, n. pl. Etym: [NL., Gr. Tri-) + (Bot.)

Defn: A Linnæan order of plants having three pistils or styles.

TRIGYNIAN; TRIGYNOUS Tri*gyn"i*an, Trig"y*nous, a. (Bot.)

Defn: Having three pistils or styles; of or pertaining to the Trigynia.

TRIHEDRAL Tri*he"dral, a. Etym: [See Trihedron.] (Geom.)

Defn: Having three sides or faces; thus, a trihedral angle is a solid angle bounded by three plane angles. [Written also triedral.]

TRIHEDRON Tri*he"dron, n. Etym: [Pref. tri- + Gr. (Geom.)

Defn: A figure having three sides.

TRIHORAL Tri*ho"ral, a. Etym: [Pref. tri- + horal.]

Defn: Occurring once in every three hours.

TRIHYBRID Tri*hy"brid, n. (Biol.)

Defn: A hybrid whose parents differ by three pairs of contrasting Mendelian characters.

TRIJUGATE Trij"u*gate, a. Etym: [See Trijugous.] (Bot.)

Defn: In three pairs; as, a trijugate leaf, or a pinnate leaf with three pairs of leaflets.

TRIJUGOUS Trij"u*gous, a. Etym: [L. trijugus threefold; tri- + jugum a yoke.] (Bot.)

Defn: Same as Trijugate.

TRIKOSANE Tri"ko*sane, n. Etym: [Pref. tri- + Gr. (Chem.)

Defn: A hydrocarbon, C23H48, of the methane series, resembling paraffin; -- so called because it has twenty-three atoms of carbon in the molecule.

TRILATERAL Tri*lat"er*al, a.Etym: [L. trilaterus; tri- (see Tri-) + latus, lateris, side: cf. F. trilatéral. See Lateral.] (Geom.)

Defn: Having three sides; being three-sided; as, a trilateral triangle. -- Tri*lat"er*al*ly, adv. -- Tri*lat"er*al*ness, n.

TRILEMMA Tri*lem"ma, n. Etym: [NL., fr. Gr. Tri-) + any thing received, in logic, an assumption. Cf. Dilemma.]

1. (Logic)

Defn: A syllogism with three conditional propositions, the major premises of which are disjunctively affirmed in the minor. See Dilemma.

2. A state of things in which it is difficult to determine which one of three courses to pursue.

TRILINEAR Tri*lin"e*ar, a. (Math.)

Defn: Of, pertaining to, or included by, three lines; as, trilinear coördinates.

TRILINGUAL Tri*lin"gual, a. Etym: [L. trilinguis; tri- (see Tri-) + lingua tongue, language. See Lingual.]

Defn: Containing, or consisting of, three languages; expressed in three languages. The much-noted Rosetta stone . . . bears upon its surface a trilingual inscription. I. Taylor.

TRILINGUAR Tri*lin"guar, a.

Defn: See Trilingual.

TRILITERAL Tri*lit"er*al, a. Etym: [Pref. tri- + literal.]

Defn: Consisting of three letters; trigrammic; as, a triliteral root or word. -- n.

Defn: A triliteral word.

TRILITERALISM Tri*lit"er*al*ism, n.

Defn: Same as Triliterality.

TRILITERALITY; TRILITERALNESS Tri*lit`er*al"i*ty, Tri*lit"er*al*ness, n.

Defn: The quality of being triliteral; as, the triliterality of Hebrew roots. W. D. Whitney.

TRILITH Tri"lith, n.

Defn: Same as Trilithon. Mollett.

TRILITHIC Tri*lith"ic a.

Defn: Pertaining to a trilith.

TRILITHON Tril"i*thon (trîl"î*thôn), n.; pl. Trilithons Etym: [NL., fr. Gr.Tri- ) + (Archæol.)

Defn: A monument consisting of three stones; especially, such a monument forming a kind of doorway, as among the ancient Celts.

TRILL Trill, v. i. Etym: [OE. trillen to roll, turn round; of Scand. origin; cf. Sw. trilla to roll, Dan. trilde, Icel. þyrla to whirl, and E. thrill. Cf. Thrill.]

Defn: To flow in a small stream, or in drops rapidly succeeding each other; to trickle. Sir W. Scott. And now and then an ample tear trilled down Her delicate cheek. Shak. Whispered sounds Of waters, trilling from the riven stone. Glover.

TRILL Trill, v. t. Etym: [OE. trillen; cf. Sw. trilla to roll.]

Defn: To turn round; to twirl. [Obs.] Gascoigne. Bid him descend and trill another pin. Chaucer.

TRILL Trill, v. t. [imp. & p. p. Trilled; p. pr. & vb. n. Trilling.] Etym: [It. trillare; probably of imitative origin.]

Defn: To impart the quality of a trill to; to utter as, or with, a trill; as, to trill the r; to trill a note. The sober-suited songstress trills her lay. Thomson.

TRILL Trill, v. i.

Defn: To utter trills or a trill; to play or sing in tremulous vibrations of sound; to have a trembling sound; to quaver. To judge of trilling notes and tripping feet. Dryden.

TRILL Trill, n. Etym: [It. trillo, fr. trillare. See Trill to shake.]

1. A sound, of consonantal character, made with a rapid succession of partial or entire intermissions, by the vibration of some one part of the organs in the mouth -- tongue, uvula, epiglottis, or lip -- against another part; as, the r is a trill in most languages.

2. The action of the organs in producing such sounds; as, to give a trill to the tongue. d

3. (Mus.)

Defn: A shake or quaver of the voice in singing, or of the sound of an instrument, produced by the rapid alternation of two contiguous tones of the scale; as, to give a trill on the high C. See Shake.

TRILLACHAN Tril"la*chan, n. (Zoöl.)

Defn: The oyster catcher. [Prov. Eng.]

TRILLING Tril"ling, n. Etym: [Cf. G. drilling.]

1. One of tree children born at the same birth. Wright.

2. (Crystallog.)

Defn: A compound crystal, consisting of three individuals.

TRILLION Tril"lion, n. Etym: [F. trillion, formed from the pref. tri- in imitation of million a million. Cf. Billion.]

Defn: According to the French notation, which is used upon the Continent generally and in the United States, the number expressed by a unit with twelve ciphers annexed; a million millions; according to the English notation, the number produced by involving a million to the third power, or the number represented by a unit with eighteen ciphers annexed. See the Note under Numeration.

TRILLIUM Tril"li*um, n. Etym: [NL.; cf. L. trilix triple-woven, triple.] (Bot.)

Defn: A genus of liliaceous plants; the three-leaved nightshade; -- so called because all the parts of the plant are in threes.

TRILLO Tril"lo, n. Etym: [It. See Trill.] (Mus.)

Defn: A trill or shake. See Trill.

TRILOBATE Tri*lo"bate, a. Etym: [Pref. tri- + lobate.]

Defn: Having three lobes.

TRILOBATION Tri`lo*ba"tion, n.

Defn: The state of being trilobate.

TRILOBED Tri"lobed, a. Etym: [Pref. tri- + lobe.]

Defn: Same as Trilobate.

TRILOBITA Tri`lo*bi"ta, n. pl. Etym: [NL.] (Paleon.)

Defn: An extinct order of arthropods comprising the trilobites.

TRILOBITE Tri"lo*bite (tri"lo*bit), n. Etym: [Cf. F. trilobite. See Trilobate.] (Paleon.)

Defn: Any one of numerous species of extinct arthropods belonging to the order Trilobita. Trilobites were very common in the Silurian and Devonian periods, but became extinct at the close of the Paleozoic. So named from the three lobes usually seen on each segment.

TRILOBITIC Tri`lo*bit"ic, a.

Defn: Of, pertaining to or containing, trilobites; as, trilobitic rocks.

TRILOCULAR Tri*loc"u*lar, a. Etym: [Pref. tri- + locular: cf. F. triloculaire.]

Defn: Having three cells or cavities; as, a trilocular capsule; a trilocular heart.

TRILOGY Tril"o*gy, n. Etym: [Gr. Tri-) + trilogie.]

Defn: A series of three dramas which, although each of them is in one sense complete, have a close mutual relation, and form one historical and poetical picture. Shakespeare's " Henry VI." is an example. On the Greek stage, a drama, or acted story, consisted in reality of three dramas, called together a trilogy, and performed consecutively in the course of one day. Coleridge.

TRILUMINAR; TRILUMINOUS Tri*lu"mi*nar, Tri*lu"mi*nous, a. Etym: [Pref. tri- + L. lumen, luminis, light.]

Defn: Having three lights [R.]

TRIM Trim, v. t. [imp. & p. p. Trimmed; p. pr. & vb. n. Trimming.] Etym: [OE. trimen, trumen, AS. trymian, trymman, to prepare, dispose, make strong, fr. trum firm, strong; of uncertain origin.]

1. To make trim; to put in due order for any purpose; to make right, neat, or pleasing; to adjust. The hermit trimmed his little fire. Goldsmith.

2. To dress; to decorate; to adorn; to invest; to embellish; as, to trim a hat. trim a Christmas tree. A rotten building newly trimmed over. Milton. I was trimmed in Julia's gown. Shak.

3. To make ready or right by cutting or shortening; to clip or lop; to curtail; as, to trim the hair; to trim a tree. " And trimmed the cheerful lamp." Byron.

4. (Carp.)

Defn: To dress, as timber; to make smooth.

5. (Naut.) (a) To adjust, as a ship, by arranging the cargo, or disposing the weight of persons or goods, so equally on each side of the center and at each end, that she shall sit well on the water and sail well; as, to trim a ship, or a boat. (b) To arrange in due order for sailing; as, to trim the sails.

6. To rebuke; to reprove; also, to beat. [Colloq.] To trim in (Carp.), to fit, as a piece of timber, into other work. -- To trim up, to dress; to put in order. I found her trimming up the diadem On her dead mistress. Shak.

TRIM Trim, v. i.

Defn: To balance; to fluctuate between parties, so as to appear to favor each.

TRIM Trim, n.

1. Dress; gear; ornaments. Seeing him just pass the window in his woodland trim. Sir W. Scott.

2. Order; disposition; condition; as, to be in good trim. " The trim of an encounter." Chapman.

3. The state of a ship or her cargo, ballast, masts, etc., by which she is well prepared for sailing.

4. (Arch)

Defn: The lighter woodwork in the interior of a building; especially, that used around openings, generally in the form of a molded architrave, to protect the plastering at those points. In ballast trim (Naut.), having only ballast on board. R. H. Dana, Jr. -- Trim of the masts (Naut.), their position in regard to the ship and to each other, as near or distant, far forward or much aft, erect or raking. -- Trim of sails (Naut.), that adjustment, with reference to the wind, witch is best adapted to impel the ship forward.

TRIM Trim, a. [Compar. Trimmer; superl. Trimmest.] Etym: [See Trim, v. t.]

Defn: Fitly adjusted; being in good order., or made ready for service or use; firm; compact; snug; neat; fair; as, the ship is trim, or trim built; everything about the man is trim; a person is trim when his body is well shaped and firm; his dress is trim when it fits closely to his body, and appears tight and snug; a man or a soldier is trim when he stands erect. With comely carriage of her countenance trim. Spenser. So deemed I till I viewed their trim array Of boats last night. Trench.

TRIMACULATED Tri*mac"u*la`ted, a. Etym: [Pref. tri- + maculated.]

Defn: Marked with three spots, or maculæ.

TRIMELLIC Tri*mel"lic, a. Etym: [Pref. tri- + L. mel, gen. mellis, honey.] (Chem.)

Defn: Of, pertaining to, or designating, a certain tribasic acid (called also trimellitic acid) metameric with trimesitic acid.

TRIMEMBRAL Tri*mem"bral, a. Etym: [L. trimembris triplemembered. See Tri-, and Member.]

Defn: Having, or consisting of, three members.

TRIMERA Tri"me*ra, n. pl. Etym: [NL. See Tri-, and -mere.] (Zoöl.)

Defn: A division of Coleoptera including those which have but three joints in the tarsi.

TRIMERAN Tri"mer*an, n. (Zoöl.)

Defn: One of the Trimera. Also used adjectively.

TRIMEROUS Tri"mer*ous, a. Etym: [See Trimera.] (Bot.)

Defn: Having the parts in threes.

TRIMESITIC Tri`me*sit"ic, a. Etym: [Pref. tri- + mesitylene + -ic.] (Chem.)

Defn: Of, pertaining to, or designating, a tribasic acid, C6H3.(CO2)3, of the aromatic series, obtained, by the oxidation of mesitylene, as a white crystalline substance. [Written also trimesic.]

TRIMESTER Tri*mes"ter, n. Etym: [L. trimestris of three months; tri- (see Tri-) + mensis month: cf. F. trimestre.]

Defn: A term or period of three months.

TRIMESTRAL Tri*mes"tral, a.

Defn: Trimestrial. Southey.

TRIMESTRIAL Tri*mes"tri*al, a.

Defn: Of or pertaining to a trimester, or period of three months; occurring once in every three months; quarterly.

TRIMETER Trim"e*ter, a. Etym: [L. trimetrus, Gr. Tri-) + measure. See Meter measure.] (Pros.)

Defn: Consisting of three poetical measures. -- n.

Defn: A poetical division of verse, consisting of three measures. Lowth.

TRIMETHYL Tri*meth"yl.

Defn: (Chem.) A prefix or combining form (also used adjectively) indicating the presence of three methyl groups.

TRIMETHYLAMINE Tri*meth`yl*am"ine, n. Etym: [Trimethyl- + amine.] (Chem.)

Defn: A colorless volatile alkaline liquid, N.(CH3)3, obtained from herring brine, beet roots, etc., with a characteristic herringlike odor. It is regarded as a substituted ammonia containing three methyl groups.

TRIMETHYLENE Tri*meth"yl*ene, n. (Chem.)

Defn: A gaseous hydrocarbon, C3H6, isomeric with propylene and obtained from it indirectly. It is the base of a series of compounds analogous to the aromatic hydrocarbons.

TRIMETRIC Tri*met"ric, a. Etym: [Pref. tri- + Gr. (Crystallog.)

Defn: Same as Orthorhombic.

TRIMETRICAL Tri*met"ric*al, a.

Defn: Same as Trimeter.

TRIMLY Trim"ly, adv.

Defn: In a trim manner; nicely.

TRIMMER Trim"mer, n.

1. One who trims, arranges, fits, or ornaments.

2. One who does not adopt extreme opinions in politics, or the like; one who fluctuates between parties, so as to appear to favor each; a timeserver. Thus Halifax was a trimmer on principle. Macaulay.

3. An instrument with which trimming is done.

4. (Arch.)

Defn: A beam, into which are framed the ends of headers in floor framing, as when a hole is to be left for stairs, or to avoid bringing joists near chimneys, and the like. See Illust. of Header.

TRIMMING Trim"ming,

Defn: a. from Trim, v. The Whigs are, essentially, an inefficient, trimming, halfway sort of a party. Jeffrey. Trimming joist (Arch.), a joist into which timber trimmers are framed; a header. See Header. Knight.

TRIMMING Trim"ming, n.

1. The act of one who trims.

2. That which serves to trim, make right or fitting, adjust, ornament, or the like; especially, the necessary or the ornamental appendages, as of a garment; hence, sometimes, the concomitants of a dish; a relish; -- usually in the pluraltrimmings..

3. The act of reprimanding or chastisting; as, to give a boy a trimming. [Colloq.]

TRIMMINGLY Trim"ming*ly, adv.

Defn: In a trimming manner.

TRIMNESS Trim"ness, n.

Defn: The quality or state of being trim; orderliness; compactness; snugness; neatness.

TRIMORPH Tri"morph, n. Etym: [See Trimorphous.] (Crystallog.)

Defn: A substance which crystallizes in three distinct forms, or which has three distinct physical states; also, any one of these distinct forms. See Trimorphism, 1.

TRIMORPHIC; TRIMORPHOUS Tri*mor"phic, Tri*mor"phous, a. Etym: [Gr. Tri-) +

Defn: Of, pertaining to, or characterized by, trimorphism; -- contrasted with monomorphic, dimorphic, and polymorphic.

TRIMORPHISM Tri*mor"phism, n. Etym: [See Trimorphic.]

1. (Crystallog.)

Defn: The property of crystallizing in three forms fundamentally distinct, as is the case with titanium dioxide, which crystallizes in the forms of rutile, octahedrite, and brookite. See Pleomorphism.

2. (Biol.)

Defn: The coëxistence among individuals of the same species of three distinct forms, not connected, as a rule, by intermediate gradations; the condition among individuals of the same species of having three different shapes or proportions of corresponding parts; -- contrasted with polymorphism, and dimorphism. Heterogonous trimporphism (Bot.), that condition in which flowers of plants of the same species have three different lengths of stamens, short, medium, and long, the blossoms of one individual plant having short and medium stamens and a long style, those of another having short and long stamens and a style of medium length, and those of a third having medium and long stamens and a short style, the style of each blossom thus being of a length not represented by its stamens.

TRIMURTI Tri*mur"ti, n. Etym: [Skr. trim; tri three + m body.] (Hindoo Myth.)

Defn: The triad, or trinity, of Hindoo gods, consisting of Brahma, the Creator, Vishnu, the Preserver, and Siva, the Destroyer. [Spelled also Trimurtti.]

TRIMYARIAN Trim`y*a"ri*an, n. Etym: [Pref. tri + Gr. (Zoöl.)

Defn: A lamellibranch which has three muscular scars on each valve.

TRINAL Tri"nal, a. Etym: [L. trinus triple, trini three each, fr. tres, tria, three. See Three, and cf. Trine, a. & n., Tern, a.]

Defn: Threefold. "Trinal unity." Milton. In their trinal triplicities on high. Spenser.

TRINDLE Trin"dle, v. t. & n.

Defn: See Trundle.

TRINE Trine, a. Etym: [See Trinal.]

Defn: Threefold; triple; as, trine dimensions, or length, breadth, and thickness.

TRINE Trine, n. Etym: [F. trine, trin. See Trinal.]

1. (Astrol.)

Defn: The aspect of planets distant from each other 120 degrees, or one third of the zodiac; trigon. In sextile, square, and trine. Milton.

2. A triad; trinity. [R.] A single trine of brazen tortoises. Mrs. Browning. Eternal One, Almighty Trine! Keble.

TRINE Trine, v. t.

Defn: To put in the aspect of a trine. [R.] By fortune he [Saturn] was now to Venus trined. Dryden.

TRINERVATE Tri*nerv"ate, a. Etym: [NL. trinervatus; pref. tri- + L. nervus nerve.] (Bot.)

Defn: Having three ribs or nerves extending unbranched from the base to the apex; -- said of a leaf. Gray.

TRINERVE; TRINERVED Tri"nerve`, Tri"nerved`, a. Etym: [Pref. tri- + nerve.] (Bot.)

Defn: Same as Trinervate.

TRINGA Trin"ga, n. Etym: [NL.] (Zoöl.)

Defn: A genus of limicoline birds including many species of sandpipers. See Dunlin, Knot, and Sandpiper.

TRINGLE Trin"gle, n. Etym: [F. tringle.]

Defn: A curtain rod for a bedstead.

TRINGOID Trin"goid, a. Etym: [Tringa + -oid.] (Zoöl.)

Defn: Of or pertaining to Tringa, or the Sandpiper family.

TRINITARIAN Trin`i*ta"ri*an, a. Etym: [Cf. F. trinitaire. See Trinity.]

Defn: Of or pertaining to the Trinity, the doctrine of the Trinity, or believers in that doctrine.

TRINITARIAN Trin`i*ta"ri*an, n.

1. One who believes in the doctrine of the Trinity.

2. (Eccl. Hist.)

Defn: One of a monastic order founded in Rome in 1198 by St. John of Matha, and an old French hermit, Felix of Valois, for the purpose of redeeming Christian captives from the Mohammedans.

TRINITARIANISM Trin`i*ta"ri*an*ism, n.

Defn: The doctrine of the Trinity; the doctrine that there are three distinct persons in the Godhead.

TRINITROCELLULOSE Tri*ni`tro*cel"lu*lose", n.

Defn: Gun cotton; -- so called because regarded as containing three nitro groups.

TRINITROPHENOL Tri*ni`tro*phe"nol, n. (Chem.)

Defn: Picric acid.

TRINITY Trin"i*ty, n. Etym: [OE. trinitee, F. trinité, L. trinitas, fr. trini three each. See Trinal.]

1. (Christian Theol.)

Defn: The union of three persons (the Father, the Son, and the Holy Ghost) in one Godhead, so that all the three are one God as to substance, but three persons as to individuality.

2. Any union of three in one; three units treated as one; a triad, as the Hindoo trinity, or Trimurti.

3. Any symbol of the Trinity employed in Christian art, especially the triangle. Trinity House, an institution in London for promoting commerce and navigation, by licensing pilots, ordering and erecting beacons, and the like. -- Trinity Sunday, the Sunday next after Whitsunday; -- so called from the feast held on that day in honor of the Holy Trinity. -- Trinity term. (Law) See the Note under Term, n., 5.

TRINIUNITY Trin`i*u"ni*ty, n. Etym: [See Trinity, and Unity.]

Defn: Triunity; trinity. [Obs.] As for terms of trinity, triniunity, . . . and the like, they reject them as scholastic notions. Milton.

TRINK Trink, n.

Defn: A kind of fishing net. [Obs.] Crabb.

TRINKET Trin"ket, n. Etym: [F. trinquet foremast, also, a certain sail, trinquette a triangular sail, or Sp. trinquete triangular.] (Naut.)

Defn: A three-cornered sail formerly carried on a ship's foremast, probably on a lateen yard. Sailing always with the sheets of mainsail and trinket warily in our hands. Hakluyt.

TRINKET Trin"ket, n. Etym: [OE. trenket a sort of knife, hence, probably, a toy knife worn as an ornament; probably from an Old French dialectic form of trenchier to cut. Cf. Trench, v. t.]

1. A knife; a cutting tool. Tusser.

2. A small ornament, as a jewel, ring, or the like.

3. A thing of little value; a trifle; a toy.

TRINKET Trin"ket, v. i.

Defn: To give trinkets; hence, to court favor; to intrigue. [Obs.] South.

TRINKETER Trin"ket*er, n.

Defn: One who trinkets. [Obs.]

TRINKETRY Trin"ket*ry, n.

Defn: Ornaments of dress; trinkets, collectively. No trinketry on front, or neck, or breast. Southey.

TRINKLE Trin"kle, v. i.

Defn: To act secretly, or in an underhand way; to tamper. [Obs.] Wright.

TRINOCTIAL Tri*noc"tial, a. Etym: [L. trinoctialis for three nights; tri- (see Tri-) + nox, noctis, night.]

Defn: Lasting during three nights; comprising three nights.

TRINODAL Tri*nod"al, a. Etym: [L. trinodis three-knotted; tri- (see Tri-) + nodus knot.]

1. (Bot.)

Defn: Having three knots or nodes; having three points from which a leaf may shoot; as, a trinodal stem.

2. (Geom.)

Defn: Having three nodal points.

TRINOMIAL Tri*no"mi*al, n. Etym: [Pref. tri- + -nomial as in binomial: cf. F. trinôme.] (Math.)

Defn: A quantity consisting of three terms, connected by the sign + or -; as, x + y + z, or ax + 2b - c2.

TRINOMIAL Tri*no"mi*al, a. (Math.)

Defn: Consisting of three terms; of or pertaining to trinomials; as, a trinomial root.

TRINOMINAL Tri*nom"i*nal, n. & a. Etym: [Pref. tri- + L. nomen, nominis, name: cf. L. trinominis three-named.] (Math.)

Defn: Trinomial.

TRINUCLEUS Tri*nu"cle*us, n. Etym: [Pref. tri- + nucleus.] (Paleon.)

Defn: A genus of Lower Silurian trilobites in which the glabella and cheeks form three rounded elevations on the head.

TRIO Tri"o, n. Etym: [It., fr. L. tres, tria, three: cf. F. trio, from the Italian. See Three.]

1. Three, considered collectively; three in company or acting together; a set of three; three united. The trio were well accustomed to act together, and were linked to each other by ties of mutual interest. Dickens.

2. (Mus.) (a) A composition for three parts or three instruments. (b) The secondary, or episodical, movement of a minuet or scherzo, as in a sonata or symphony, or of a march, or of various dance forms; -- not limited to three parts or instruments.

TRIOBOLAR; TRIOBOLARY Tri*ob"o*lar, Tri*ob"o*la*ry, a. Etym: [LL. triobolaris, fr. L. triobolus a piece of three oboli, Gr. Tri-, and Obolus.]

Defn: Of the value of three oboli; hence, mean; worthless. [Obs.] It may pass current . . . for a triobolar ballad. Cheyne.

TRIOCTILE Tri*oc"tile, n. Etym: [Pref. tri- + octile.] (Astrol.)

Defn: An aspect of two planets with regard to the earth when they are three octants, or three eighths of a circle, that is, 135 degrees, distant from each other. Hutton.

TRIOECIA Tri*oe"ci*a, n. pl. Etym: [NL. See Trioecious.] (Bot.)

Defn: The third order of the Linnæan class Polygamia.

TRIOECIOUS Tri*oe"cious, a. Etym: [Pref. tri- + Gr. (Bot.)

Defn: Having three sorts of flowers on the same or on different plants, some of the flowers being staminate, others pistillate, and others both staminate and pistillate; belonging to the order Trioecia.

TRIOLE Tri"ole, n. Etym: [See Triolet.] (Mus.)

Defn: Same as Triplet.

TRIOLEIN Tri*o"le*in, n. Etym: [Pref. tri- + olein.] (Physiol. Chem.)

Defn: See Olein.

TRIOLET Tri"o*let, n. Etym: [F. triolet. See Trio.]

Defn: A short poem or stanza of eight lines, in which the first line is repeated as the fourth and again as the seventh line, the second being, repeated as the eighth. Brande & C.

TRIONAL Tri"o*nal, n. [Pref. tri- + sulphonal; -- so called because it contains three ethyls.] (Chem.)

Defn: A compound similar to sulphonal, used as a hypnotic in medicine.

TRIONYCHOIDEA Tri*on`y*choi"de*a, n. pl. Etym: [NL. See Trionyx, and -old.] (Zoöl.)

Defn: A division of chelonians which comprises Trionyx and allied genera; -- called also Trionychoides, and Trionychina.

TRIONYX Tri*on"yx, n. Etym: [NL., fr. Gr. Tri-) + (Zoöl.)

Defn: A genus of fresh-water or river turtles which have the shell imperfectly developed and covered with a soft leathery skin. They are noted for their agility and rapacity. Called also soft tortoise, soft-shell tortoise, and mud turtle.

Note: The common American species (Trionyx, or Aspidonectus, ferox) becomes over a foot in length and is very voracious. Similar species are found in Asia and Africa.

TRIOR Tri"or, n. (Law)

Defn: Same as Trier, 2 and 3.

TRIOSE Tri"ose, n. [Tri- + -ose.] (Chem.) (a) A sugar derived from a trihydric alcohol. (b) A trisaccharide.

TRIOXIDE Tri*ox"ide, n. Etym: [Pref. tri- + oxide.] (Chem.)

Defn: An oxide containing three atoms of oxygen; as, sulphur trioxide, SO3; -- formerly called tritoxide.

TRIP Trip, n. i. [imp. & p. p. Tripped; p. pr. & vb. n. Tripping.] Etym: [OE. trippen; akin to D. trippen, Dan. trippe, and E. tramp. See Tramp.]

1. To move with light, quick steps; to walk or move lightly; to skip; to move the feet nimbly; -- sometimes followed by it. See It, 5. This horse anon began to trip and dance. Chaucer. Come, and trip it, as you go, On the light fantastic toe. Milton. She bounded by, and tripped so light They had not time to take a steady sight. Dryden.

2. To make a brief journey or pleasure excursion; as, to trip to Europe.

3. To take a quick step, as when in danger of losing one's balance; hence, to make a false; to catch the foot; to lose footing; to stumble.

4. Fig.: To be guilty of a misstep; to commit an offense against morality, propriety, or rule; to err; to mistake; to fail. "Till his tongue trip." Locke. A blind will thereupon comes to be led by a blind understanding; there is no remedy, but it must trip and stumble. South. Virgil is so exact in every word that none can be changed but for a worse; he pretends sometimes to trip, but it is to make you think him in danger when most secure. Dryden. What dost thou verily trip upon a word R. Browning.

TRIP Trip, v. t.

1. To cause to stumble, or take a false step; to cause to lose the footing, by striking the feet from under; to cause to fall; to throw off the balance; to supplant; -- often followed by up; as, to trip up a man in wrestling. The words of Hobbes's defense trip up the heels of his cause. Abp. Bramhall.

2. Fig.: To overthrow by depriving of support; to put an obstacle in the way of; to obstruct; to cause to fail. To trip the course of law, and blunt the sword. Shak.

3. To detect in a misstep; to catch; to convict. [R.] These her women can trip me if I err. Shak.

4. (Naut.) (a) To raise (an anchor) from the bottom, by its cable or buoy rope, so that it hangs free. (b) To pull (a yard) into a perpendicular position for lowering it.

5. (Mach.)

Defn: To release, let fall, or see free, as a weight or compressed spring, as by removing a latch or detent.

TRIP Trip, n.

1. A quick, light step; a lively movement of the feet; a skip. His heart bounded as he sometimes could hear the trip of a light female step glide to or from the door. Sir W. Scott.

2. A brief or rapid journey; an excursion or jaunt. I took a trip to London on the death of the queen. Pope.

3. A false step; a stumble; a misstep; a loss of footing or balance. Fig.: An error; a failure; a mistake. Imperfect words, with childish trips. Milton. Each seeming trip, and each digressive start. Harte.

4. A small piece; a morsel; a bit. [Obs.] "A trip of cheese." Chaucer.

5. A stroke, or catch, by which a wrestler causes his antagonist to lose footing. And watches with a trip his foe to foil. Dryden. It is the sudden trip in wrestling that fetches a man to the ground. South.

6. (Naut.)

Defn: A single board, or tack, in plying, or beating, to windward.

7. A herd or flock, as of sheep, goats, etc. [Prov. Eng. & Scott.]

8. A troop of men; a host. [Obs.] Robert of Brunne.

9. (Zoöl.)

Defn: A flock of widgeons.

TRIPALMITATE Tri*pal"mi*tate, n. Etym: [Pref. tri- + palmitate.] (Chem.)

Defn: A palmitate derived from three molecules of palmitic acid.

TRIPALMITIN Tri*pal"mi*tin, n. Etym: [Pref. tri- + palmitin.] (Physiol. Chem.)

Defn: See Palmitin.

TRIPANG Tri*pang", n. (Zoöl.)

Defn: See Trepang.

TRIPARTED Tri"part`ed, a. Etym: [Pref. tri- + parted.]

1. (Her.)

Defn: Parted into three piece; having three parts or pieces; -- said of the field or of a bearing; as, a cross triparted.

2. (Bot.)

Defn: Divided nearly to the base into three segments or lobes.

TRIPARTIBLE Tri*part"i*ble, a.

Defn: Divisible into three parts.

TRIPARTIENT Tri*par"tient, a. Etym: [See Tripartite.] (Arith.)

Defn: Dividing into three parts; -- said of a number which exactly divides another into three parts.

TRIPARTITE Trip"ar*tite, a. Etym: [L. tripartitus; tri- (see Tri-) + partitus, p. p. of partiri to part, to divide. See Part, v. i.]

1. Divided into three parts; triparted; as, a tripartite leaf.

2. Having three corresponding parts or copies; as, to make indentures tripartite. A. Smith.

3. Made between three parties; as, a tripartite treaty.

TRIPARTITELY Trip`ar*tite*ly, adv.

Defn: In a tripartite manner.

TRIPARTITION Trip`ar*ti"tion, n. Etym: [Cf. F. tripartition.]

Defn: A division by threes, or into three parts; the taking of a third part of any number or quantity.

TRIPASCHAL Tri*pas"chal, a. Etym: [Pref. tri- + paschal.]

Defn: Including three passovers.

TRIPE Tripe, n. Etym: [OE. tripe, F. tripe; of uncertain origin; cf. Sp. & Pg. tripa, It. trippa, OD. tripe, W. tripa, Armor. stripen.]

1. The large stomach of ruminating animals, when prepared for food. How say you to a fat tripe finely broiled Shak.

2. The entrails; hence, humorously or in contempt, the belly; -- generally used in the plural. Howell.

TRIPEDAL Trip"e*dal, a. Etym: [L. tripedalis; tri- (see Tri-) + pes, pedis, a foot.]

Defn: Having three feet.

TRIPE-DE-ROCHE Tripe`-de-roche", n. Etym: [F.] (Bot.)

Defn: Same as Rock tripe, under Rock.

TRIPEL Trip"el, n. (Min.)

Defn: Same as Tripoli.

TRIPEMAN Tripe"man, n.; pl. -men (.

Defn: A man who prepares or sells tripe.

TRIPENNATE Tri*pen"nate, a. Etym: [Pref. tri- + pennate.] (Bot.)

Defn: Same as Tripinnate.

TRIPERSONAL Tri*per"son*al, a. Etym: [Pref. tri- + personal.]

Defn: Consisting of three persons. Milton.

TRIPERSONALIST Tri*per"son*al*ist, n.

Defn: A Trinitarian.

TRIPERSONALITY Tri*per`son*al"i*ty, n.

Defn: The state of existing as three persons in one Godhead; trinity.

TRIPERY Trip"er*y, n. Etym: [Cf. F. triperie.]

Defn: A place where tripe is prepared or sold. London Quart. Rev.

TRIPESTONE Tripe"stone`, n. (Min.)

Defn: A variety of anhydrite composed of contorted plates fancied to resemble pieces of tripe.

TRIPETALOID Tri*pet"al*oid, a. Etym: [Pref. tri- + petaloid.] (Bot.)

Defn: Having the form or appearance of three petals; appearing as if furnished with three petals.

TRIPETALOUS Tri*pet"al*ous, a. Etym: [Pref. tri- + petalous: cf. F. tripétale.] (Bot.)

Defn: Having three petals, or flower leaves; three-petaled.

TRIP HAMMER Trip" ham`mer.

Defn: A tilt hammer.

TRIPHANE Tri"phane, n. Etym: [Gr. Tri-) + to appear cf. F. triphane.] (Min.)

Defn: Spodumene.

TRIPHTHONG Triph"thong, n. Etym: [Pref. tri- + -phthong, as in diphthong: cf. F. triphthonque.] (Orthoëpy)

Defn: A combination of three vowel sounds in a single syllable, forming a simple or compound sound; also, a union of three vowel characters, representing together a single sound; a trigraph; as, eye, -ieu in adieu, -eau in beau, are examples of triphthongs.

TRIPHTHONGAL Triph*thon"gal, a.

Defn: Of or pertaining to a triphthong; consisting of three vowel sounds pronounced together in a single syllable.

TRIPHYLINE Triph"y*line, n.

Defn: Triphylite.

TRIPHYLITE Triph"y*lite, n. Etym: [Pref. tri- + Gr. (Min.)

Defn: A mineral of a grayish-green or bluish color, consisting of the phosphates of iron, manganese, and lithia.

Note: A salmon-colored or clove-brown variety containing but little iron is known as lithiophilite.

TRIPHYLLOUS Triph"yl*lous, a. Etym: [Gr. Tri-) + a leaf: cf. F. triphylle.] (Bot.)

Defn: Having three leaves; three-leaved.

TRIPINNATE Tri*pin"nate, a. Etym: [Pref. tri- + pinnate.] (Bot.)

Defn: Having bipinnate leaflets arranged on each side of a rhachis.

TRIPINNATIFID Tri`pin*nat"i*fid, a. Etym: [Pref. tri- + pinnatifid.] (Bot.)

Defn: Thrice pinnately cleft; -- said of a pinnatifid leaf when its segments are pinnatifid, and the subdivisions of these also are pinnatifid.

TRIPITAKA Tri*pit"a*ka, n. [Skr. tripitsaka.]

Defn: The three divisions, or "baskets" (pitakas), of buddhist scriptures, -- the Vinayapitaka [Skr. Vinayapitsaka] , or Basket of Discipline; Suttapitaka [Pali] , or Basket of Discourses; and Abhidhammapitaka [Pali] , or Basket of Metaphysics.

TRIPLASIAN Tri*pla"sian, a. Etym: [Gr.

Defn: Three-fold; triple; treble. [Obs.] Cudworth.

TRIPLE Tri"ple, a. Etym: [L. triplus; tri- (see Tri-) + -plus, as in duplus double: cf. F. triple. See Double, and cf. Treble.]

1. Consisting of three united; multiplied by three; threefold; as, a triple knot; a triple tie. By thy triple shape as thou art seen. Dryden.

2. Three times repeated; treble. See Treble.

3. One of three; third. [Obs.] Shak. Triple crown, the crown, or tiara, of the pope. See Tiara, 2. -- Triple-expansion steam engine, a compound steam engine in which the same steam performs work in three cylinders successively. -- Triple measure (Mus.), a measure of tree beats of which first only is accented. -- Triple ratio (Math.), a ratio which is equal to 3. -- Triple salt (Chem.), a salt containing three distinct basic atoms as radicals; thus, microcosmic salt is a triple salt. -- Triple star (Astron.), a system of three stars in close proximity. -- Triple time (Mus.), that time in which each measure is divided into three equal parts. -- Triple valve, in an automatic air brake for railroad cars, the valve under each car, by means of which the brake is controlled by a change of pressure in the air pipe leading from the locomotive.

TRIPLE Tri"ple, v. i. [imp. & p. p. Tripled; p. pr. & vb. n. Tripling.] Etym: [Cf. F. tripler. See Triple, a.]

Defn: To make threefold, or thrice as much or as many; to treble; as, to triple the tax on coffee.

TRIPLE-CROWNED Tri"ple-crowned`, a.

Defn: Having three crowns; wearing the triple crown, as the pope.

TRIPLE-HEADED Tri"ple-head`ed, a.

Defn: Having three heads; three-headed; as, the triple-headed dog Cerberus.

TRIPLET Trip"let, n. Etym: [From Triple.]

1. A collection or combination of three of a kind; three united.

2. (Poetry)

Defn: Three verses rhyming together.

3. (Mus.)

Defn: A group of three notes sung or played in the tree of two.

4. pl.

Defn: Three children or offspring born at one birth.

TRIPLE-TAIL Tri"ple-tail`, n. (Zoöl.)

Defn: An edible fish (Lobotes Surinamensis) found in the warmer parts of all the oceans, and common on the southern and middle coasts of the United States. When living it is silvery gray, and becomes brown or blackish when dead. Its dorsal and anal fins are long, and extend back on each side of the tail. It has large silvery scales which are used in the manufacture of fancy work. Called also, locally, black perch, grouper, and flasher.

TRIPLEX Tri"plex, a. (Mach.)

Defn: Havingthree principal operative parts or motions, so as to produce a three-fold effect.

TRIPLICATE Trip"li*cate, a. Etym: [L. triplicatus, p. p. of triplicare to triple, treble; tri- (see Tri-) + plicare to fold. See Ply, v. t.]

Defn: Made thrice as much; threefold; tripled. Triplicate ratio (Math.), the ratio of the cubes of two quantities; thus, the triplicate ratio of a to b is a3: b3.

TRIPLICATE Trip"li*cate, n.

Defn: A third thing corresponding to two others of the same kind.

TRIPLICATE-TERNATE Trip"li*cate-ter`nate, a. (Bot.)

Defn: Triternate.

TRIPLICATION Trip"li*ca"tion, n. Etym: [L. triplicatio: cf. F. triplication.]

1. The act of tripling, or making threefold, or adding three together. Glanvill.

2. (Civil Law)

Defn: Same as Surrejoinder.

TRIPLICITY Tri*plic"i*ty, n. Etym: [Cf. F. triplicité, fr. L. triplex, triplicis, threefold. See Triplicate, a.]

Defn: The quality or state of being triple, or threefold; trebleness. In their trinal triplicities on high. Spenser.

TRIPLICOSTATE Trip`li*cos"tate, a. Etym: [Triple + costate.] (Bot.)

Defn: Three-ribbed.

TRIPLITE Trip"lite, n. Etym: [Cf. F. triplite. See Triple.] (Min.)

Defn: A mineral of a dark brown color, generally with a fibrous, massive structure. It is a fluophosphate of iron and manganese.

TRIPLOBLASTIC Trip`lo*blas"tic, a. Etym: [Gr. -blast + -ic.] (Biol.)

Defn: Of, pertaining to, or designating, that condition of the ovum in which there are three primary germinal layers, or in which the blastoderm splits into three layers.

TRIPLOIDITE Trip*loi"dite, n. (Min.)

Defn: A manganese phosphate near triplite, but containing hydroxyl instead of fluorine.

TRIPLY Trip"ly, adv.

Defn: In a triple manner.

TRIPMADAM Trip"mad`am, n. Etym: [F. tripe-madame, trique-madame.] (Bot.)

Defn: Same as Prickmadam.

TRIPOD Tri"pod, n. Etym: [L. tripus, -odis, Gr. Tri-) + Foot, and cf. Tripos, Trivet.]

1. Any utensil or vessel, as a stool, table, altar, caldron, etc., supported on three feet.

Note: On such, a stool, in the temple of Apollo at Delphi, the Pythian priestess sat while giving responses to those consulting the Delphic oracle.

2. A three-legged frame or stand, usually jointed at top, for supporting a theodolite, compass, telescope, camera, or other instrument. Tripod of life, or Vital tripod (Physiol.), the three organs, the heart, lungs, and brain; -- so called because their united action is necessary to the maintenance of life.

TRIPODIAN Tri*po"di*an, n. (Mus.)

Defn: An ancient stringed instrument; -- so called because, in form, it resembled the Delphic tripod.

TRIPODY Trip"o*dy, n. Etym: [Pref. tri- + -pody, as in dipody.] (Pros.)

Defn: Three metrical feet taken together, or included in one measure.

TRIPOLI Trip"o*li, n. (Min.)

Defn: An earthy substance originally brought from Tripoli, used in polishing stones and metals. It consists almost wholly of the siliceous shells of diatoms.

TRIPOLINE Trip"o*line, a.

1. Of or pertaining to Tripoli or its inhabitants; Tripolitan.

2. Of or pertaining to tripoli, the mineral.

TRIPOLITAN Tri*pol"i*tan, a.

Defn: Of or pertaining to Tripoli or its inhabitants; Tripoline. -- n.

Defn: A native or inhabitant of Tripoli.

TRIPOS Tri"pos, n.; pl. Triposes. Etym: [Gr. Tripod.]

1. A tripod. [Obs.] Dryden.

2. A university examination of questionists, for honors; also, a tripos paper; one who prepares a tripos paper. [Cambridge University, Eng.] Classical tripos examination, the final university examination for classical honors, optional to all who have taken the mathematical honors. C. A. Bristed. -- Tripos paper, a printed list of the successful candidates for mathematical honors, accompanied by a piece in Latin verse. There are two of these, designed to commemorate the two tripos days. The first contains the names of the wranglers and senior optimes, and the second the names of the junior optimes. The word tripos is supposed to refer to the three-legged stool formerly used at the examinations for these honors, though some derive it from the three brackets formerly printed on the back of the paper. C. A. Bristed.

TRIPPANT Trip"pant, a. (Her.)

Defn: See Tripping, a., 2.

TRIPPER Trip"per, n.

1. One who trips or supplants; also, one who walks or trips nimbly; a dancer.

2. An excursionist.

TRIPPET Trip"pet, n. (Mach.)

Defn: A cam, wiper, or projecting piece which strikes another piece repeatedly.

TRIPPING Trip"ping, a.

1. Quick; nimble; stepping lightly and quickly.

2. (Her.)

Defn: Having the right forefoot lifted, the others remaining on the ground, as if he were trotting; trippant; -- said of an animal, as a hart, buck, and the like, used as a bearing.

TRIPPING Trip"ping, n.

1. Act of one who, or that which, trips.

2. A light dance. Other trippings to be trod of lighter toes. Milton.

3. (Naut.)

Defn: The loosing of an anchor from the ground by means of its cable or buoy rope. Tripping line (Naut.), a small rope attached to the topgallant or royal yard, used to trip the yard, and in lowering it to the deck; also, a line used in letting go the anchor. Luce.

TRIPPINGLY Trip"ping*ly, adv.

Defn: In a tripping manner; with a light, nimble, quick step; with agility; nimbly. Sing, and dance it trippingly. Shak. Speak the speech . . . trippingly on the tongue. Shak.

TRIPSIS Trip"sis, n. Etym: [NL., fr. Gr. (Med.) (a) Trituration. [R.] (b) Shampoo. [R.]

TRIPTOTE Trip"tote, n. Etym: [L. triptotum, Gr. Tri-) + (Gram.)

Defn: A noun having three cases only.

TRIPTYCH Trip"tych, n. Etym: [Gr. Tri-) +

Defn: Anything in three parts or leaves. Specifically: -- (a) A writing tablet in three parts, two of which fold over on the middle part. (b) A picture or altarpiece in three compartments.

TRIPUDIARY Tri*pu"di*a*ry, a. Etym: [L. tripudium a measured stamping, a leaping, a solemn religious dance.]

Defn: Of or pertaining to dancing; performed by dancing. [R.] " Tripudiary augurations." Sir T. Browne.

TRIPUDIATE Tri*pu"di*ate, v. i. Etym: [L. tripudiare, tripudiatum.]

Defn: To dance. [R.] Cockeram.

TRIPUDIATION Tri*pu`di*a"tion, n. Etym: [L. tripudiatio.]

Defn: The act of dancing. [R.] Bacon. Carlyle.

TRIQUADRANTAL Tri`quad*ran"tal, a. Etym: [Pref. tri- + quadrantal.] (Spherical Trig.)

Defn: Having three quadrants; thus, a triquadrantal triangle is one whose three sides are quadrants, and whose three angles are consequently right angles.

TRIQUETRAL Tri*que"tral, a.

Defn: Triquetrous.

TRIQUETROUS Tri*que"trous, a. Etym: [L. triquetrus.]

Defn: Three sided, the sides being plane or concave; having three salient angles or edges; trigonal.

TRIQUETRUM Tri*que"trum, n.; pl. Triquetra. Etym: [NL.] (Anat.)

Defn: One of the bones of the carpus; the cuneiform. See Cuneiform (b).

TRIRADIATE; TRIRADIATED Tri*ra"di*ate, Tri*ra"di*a`ted, a. Etym: [Pref. tri- + radiate.]

Defn: Having three rays.

TRIRECTANGULAR Tri`rec*tan"gu*lar, a. Etym: [Pref. tri- + rectangular.] (Spherical Trig.)

Defn: Having three right angles. See Triquadrantal.

TRIREME Tri"reme, n. Etym: [L. triremis; tri- (see Tri-) + remus an oar, akin to E. row. See Row to propel with an oar.] (Class. Antiq.)

Defn: An ancient galley or vessel with tree banks, or tiers, of oars.

TRIRHOMBOIDAL Tri`rhom*boid"al, a. Etym: [Pref. tri- + rhomboidal.]

Defn: Having three rhombic faces or sides.

TRISACCHARIDE; TRISACCHARID Tri*sac"cha*ride, n. Also -rid. (Chem.)

Defn: A complex sugar, as raffinose, yielding by hydrolysis three simple sugar molecules.

TRISACRAMENTARIAN Tri*sac`ra*men*ta"ri*an, n. Etym: [Pref. tri- + sacramentarian.] (Eccl.)

Defn: One who recognizes three sacraments, and no more; -- namely, baptism, the Lord's Supper, and penance. See Sacrament.

TRISAGION Tris*ag"i*on, n. Etym: [NL., fr. Gr. (Eccl.)

Defn: An ancient anthem, -- usually known by its Latin name tersanctus.See Tersanctus.

TRISECT Tri*sect", v. t. [imp. & p. p. Trisected; p. pr. & vb. n. Trisecting.] Etym: [Pref. tri- + L. sectus, p. p. of secare to cut. See Section.]

1. To cut or divide into three parts.

2. (Geom.)

Defn: To cut or divide into three equal parts.

TRISECTED Tri*sect"ed, a. (Bot.)

Defn: Divided into three parts or segments by incisions extending to the midrib or to the base; -- said of leaves.

TRISECTION Tri*sec"tion, n. Etym: [Cf. F. trisection.]

Defn: The division of a thing into three parts, Specifically: (Geom.) the division of an angle into three equal parts.

TRISERALOUS Tri*ser"al*ous, a. Etym: [Pref. tri- + sepal.] (Bot.)

Defn: Having three sepals, or calyx leaves.

TRISERIAL; TRISERIATE Tri*se"ri*al, Tri*se"ri*ate, a Etym: [Pref. tri- + serial, seriate.] (Bot.)

Defn: Arranged in three vertical or spiral rows.

TRISKELION; TRISKELE Tris*kel"i*on, or Tris"kele, n. [Gr. three-legged. See Tri-; Isosceles.]

Defn: A figure composed of three branches, usually curved, radiating from a center, as the figure composed of three human legs, with bent knees, which has long been used as a badge or symbol of Sicily and of the Isle of Man.

TRISMUS Tris"mus, n. Etym: [NL., form Gr. (Med.)

Defn: The lockjaw.

TRISNITRATE Tris*ni"trate, n. Etym: [Gr. nitrate.] (Chem.)

Defn: A nitrate formed from three molecules of nitric acid; also, less properly, applied to certain basic nitrates; as, trisnitrate of bismuth.

TRISOCTAHEDRON Tris*oc`ta*he"dron, n. Etym: [Gr. octahedron.] (Crystallog.)

Defn: A solid of the isometric system bounded by twenty-four equal faces, three corresponding to each face of an octahedron. Tetragonal trisoctahedron, a trisoctahedron each face of which is a quadrilateral; called also trapezohedron and icositetrahedron. -- Trigonal trisoctahedron, a trisoctahedron each face of which is an isosceles triangle.

TRISPAST; TRISPASTON Tri"spast, Tri*spas"ton, n. Etym: [NL. trispaston, fr. Gr. Tri-) + (Mech.)

Defn: A machine with three pulleys which act together for raising great weights. Brande & C.

TRISPERMOUS Tri*sper"mous, a. Etym: [Pref. tri- + Gr. (Bot.)

Defn: Containing three seeds; three-seeded; as, a trispermous capsule.

TRISPLANCHNIC Tri*splanch"nic, a. Etym: [Tri- + splanchnic.] (Anat.)

Defn: Of or pertaining to the three great splanchnic cavities, namely, that of the head, the chest, and the abdomen; -- applied to the sympathetic nervous system.

TRIST Trist, v. t. & i. [imp. Triste.]

Defn: To trust. [Obs.] Chaucer.

TRIST Trist, n. Etym: [See Tryst.]

1. Trust. [Obs.]

2. A post, or station, in hunting. [Obs.] Chaucer.

3. A secret meeting, or the place of such meeting; a tryst. See Tryst. [Obs.] George Douglas caused a trist to be set between him and the cardinal and four lords; at the which trist he and the cardinal agreed finally. Letter dated Sept., 1543.

TRIST Trist, a. Etym: [F. triste, L. tristis.]

Defn: Sad; sorrowful; gloomy. [Obs.] Fairfax.

TRISTE Triste, n.

Defn: A cattle fair. [Prov. Eng.]

TRISTEARATE Tri*ste"a*rate, n.

Defn: Tristearin.

TRISTEARIN Tri*ste"a*rin, n. Etym: [Pref. tri- + stearin.] (Physiol. Chem.)

Defn: See Stearin.

TRISTFUL Trist"ful, a.

Defn: Sad; sorrowful; gloomy. Shak. Eyes so tristful, eyes so tristful, Heart so full of care and cumber. Longfellow.

TRISTFULLY Trist"ful*ly, adv.

Defn: In a tristful manner; sadly.

TRISTICHOUS Tris"tich*ous, a. Etym: [Gr. Tri-) + (Bot.)

Defn: Arranged in three vertical rows.

TRISTIGMATIC; TRISTIGMATOSE Tri`stig*mat"ic, Tri*stig"ma*tose`, a. Etym: [Pref. tri- + stigma.] (Bot.)

Defn: Having, or consisting of, three stigmas. Gray.

TRISTITIATE Tris*ti"ti*ate, v. t. Etym: [L. tristitia sadness, fr. tristis sad.]

Defn: To make sad. [Obs.] Feltham.

TRISTOMA Tris"to*ma, n. Etym: [NL., from Gr. Tri-) + (Zoöl.)

Defn: Any one of numerous species of trematode worms belonging to Tristoma and allied genera having a large posterior sucker and two small anterior ones. They usually have broad, thin, and disklike bodies, and are parasite on the gills and skin of fishes.

TRISTY Trist"y, a.

Defn: See Trist, a. [Obs.] Ashmole.

TRISULC Tri"sulc, n. Etym: [L. trisulcus; tri- (see Tri-) + sulcus a furrow.]

Defn: Something having three forks or prongs, as a trident. [Obs.] "Jupiter's trisulc." Sir T. Browne.

TRISULCATE Tri*sul"cate, a. Etym: [Pref. tri- + sulcate.]

Defn: Having three furrows, forks, or prongs; having three grooves or sulci; three-grooved.

TRISULPHIDE Tri*sul"phide, n. Etym: [Pref. tri- + sulphide.] (Chem.)

Defn: A sulphide containing three atoms of sulphur.

TRISYLLABIC; TRISYLLABICAL Tris`yl*lab"ic, Tris`yl*lab"ic*al, a. Etym: [L. trisyllabus, Gr. Tri- ) + trissyllabique.]

Defn: Of or pertaining to a trisyllable; consisting of three syllables; as, "syllable" is a trisyllabic word. -- Tris`yllab"ic*al*ly, adv.