Te*traph"yl*lous (?), a. [Tetra- + Gr. &?; a leaf.] (Bot.) Having four
leaves; consisting of four distinct leaves or leaflets.
||Tet"ra*pla (?), n.; etymologically pl., but syntactically sing. [NL.,
||fr. Gr. tetraplo`os, tetraploy^s, fourfold.] A Bible consisting of
||four different Greek versions arranged in four columns by Origen;
||hence, any version in four languages or four columns.
||
||Tet`rap*neu"mo*na (?), n. pl. [NL. See Tetra-, and Pneumo-.] (Zoöl.)
||A division of Arachnida including those spiders which have four
||lungs, or pulmonary sacs. It includes the bird spiders (Mygale) and
||the trapdoor spiders. See Mygale.
||
Tet`rap*nue*mo"ni*an (?), n. (Zoöl.) One of the Tetrapneumona.
Tet"ra*pod (?), n. [Gr. &?; fourfooted; te`tra- (see Tetra-) + &?;,
&?;, foot.] (Zoöl.) An insect characterized by having but four perfect
legs, as certain of the butterflies.
Te*trap"o*dy (?), n. [Gr. &?;.] A set of four feet; a measure or
distance of four feet.
Te*trap"ter*an (?), n. [See Tetrapterous.] (Zoöl.) An insect having
four wings.
Te*trap"ter*ous (?), a. [Gr. &?;; te`tra- (see Tetra-) + &?; wing.]
(Zoöl.) Having four wings.
Tet"rap*tote (?), n. [L. tetraptotum, Gr. &?;.] (Gram.) A noun that has
four cases only. Andrews.
Te"trarch (?), n. [L. tetrarches, Gr. &?;, &?;; te`tra- (see Tetra-) +
&?; a ruler, &?; to lead; rule: cf. F. tétrarque. See Arch, a.] (Rom.
Antiq.) A Roman governor of the fourth part of a province; hence, any
subordinate or dependent prince; also, a petty king or sovereign.
Te"trarch, a. Four. [Obs.] Fuller.
Te*trarch"ate (?), n. [Cf. F. tétrarchat.] (Rom. Antiq.) A tetrarchy.
Te*trarch"ic*al (?), a. [Gr. &?;.] Of or pertaining to a tetrarch or
tetrarchy. Bolingbroke.
Tet"rarch*y (?), n.; pl. Tetrarchies (#). [L. tetrarchia, Gr. &?;: cf.
F. tétrarchie.] (Rom. Antiq.) The district under a Roman tetrarch; the
office or jurisdiction of a tetrarch; a tetrarchate.
Tet`ra*schis"tic (?), a. [Gr. &?; divided into four parts; te`tra-
tetra- + &?; to split.] (Biol.) Characterized by division into four
parts.
Tet`ra*sep"al*ous (?), a. [Tetra- + sepal.] (Bot.) Having four sepals.
Tet`ra*spas"ton (?), n. [NL., fr. Gr. te`tra- (see Tetra-) + &?; to
draw, pull.] (Mach.) A machine in which four pulleys act together.
Brande & C.
Tet`ra*sper"mous (?), a. [Tetra- + Gr. &?; a seed.] (Bot.) Having four
seeds.
Tetraspermous plant, a plant which produces four seeds in each flower.
Tet"ra*spore (?), n. [Tetra- + spore.] (Bot.) A nonsexual spore, one of
a group of four regularly occurring in red seaweeds. — Tet`ra*spor"ic
(#), a.
Te*tras"tich (?), n. [L. tetrastichon, Gr. &?;; te`tra- (see Tetra-) +
&?; a row, verse.] A stanza, epigram, or poem, consisting of four
verses or lines. Pope.
Tet"ra*style (?), a. [L. tetrastylon, Gr. &?; with four pillars in
front; te`tra- (see Tetra-) + &?; a column.] (Arch.) Having four
columns in front; — said of a temple, portico, or colonnade. — n. A
tetrastyle building.
{ Tet`ra*syl*lab"ic (?), Tet`ra*syl*lab"ic*al (?), } a. [Cf. F.
tétrasyllabique.] Consisting of, or having, four syllables;
quadrisyllabic.
Tet"ra*syl`la*ble (?), n. [Tetra- + syllable: cf. Gr. &?; of four
syllables.] A word consisting of four syllables; a quadrisyllable.
Tet`ra*the"cal (?), a. [Tetra- + thecal.] (Bot.) Having four
loculaments, or thecæ.
Tet`ra*thi"on*ate (?), n. (Chem.) A salt of tetrathionic acid.
Tet`ra*thi*on"ic (?), a. [Tetra- + thionic.] (Chem.) Of, pertaining to,
or designating, a thionic derivative, H2S4O6, of sulphuric acid,
obtained as a colorless, odorless liquid.
Tet`ra*tom"ic (?), a. [Tetra- + atomic.] (Chem.) (a) Consisting of four
atoms; having four atoms in the molecule, as phosphorus and arsenic.
(b) Having a valence of four; quadrivalent; tetravalent; sometimes, in
a specific sense, having four hydroxyl groups, whether acid or basic.
Te*trav"a*lence (?), n. (Chem.) The quality or state of being
tetravalent; quadrivalence.
Te*trav"a*lent (?), a. [Tetra- + L. valens, -entis, p. pr.] (Chem.)
Having a valence of four; tetratomic; quadrivalent.
Te*trax"ile (?), a. [Tetra- + axile.] (Zoöl.) Having four branches
diverging at right angles; — said of certain spicules of sponges.
Tet*raz"o- (?), a. [Tetra- + azo- .] (Chem.) A combining form (also
used adjectively), designating any one of a series of double
derivatives of the azo and diazo compounds containing four atoms of
nitrogen.
Tet"ra*zone (?), n. (Chem.) Any one of a certain series of basic
compounds containing a chain of four nitrogen atoms; for example, ethyl
tetrazone, (C2H5)2N. N2.N(C2H5)2, a colorless liquid having an odor of
leeks.
{ Tet"ric (?), Tet"ri*cal (?), } a. [L. tetricus, taetricus, from
teter, taeter, offensive, foul.] Forward; perverse; harsh; sour;
rugged. [Obs.] — Tet"ric*al*ness, n.
Te*tric"i*ty (?), n. [L. tetricitas, taetricitas.] Crabbedness;
perverseness. [Obs.]