tetrapleural 
tetrapleural (tet-ra-plo'ral), a. [As Tctrapleura 
+ -al.] In proniorpltology, zygopleural with 
four autimeres. Haeckel. 
Tetrapneumona (tet-rap-nu'mo-na), n. pi. 
[NL., neut. pi. of *tetra}/neumo>tus: see tetrap- 
neuiiionoug.] 1. A division of Arnneina, or true 
spiders, having four lungs, four spinnerets, and 
eight approximated ocelli : distinguished from 
IHpueumones. It consists of the mygalids or thera- 
phoses, the bird-spiders of South America, the tarantu- 
las of North America, and the trap-door spiders. Also 
Tetrapiwunumes. 
2. A group of holothurians, represented by the 
genus lihopalodina, having four water-lungs 
(whence the name), Schmarda. Also called 
Decacreiiidia, Dtptostomidm, and Rhopalodinse. 
tetrapneumonian(tet*rap-nu-m6'ni-an),a.and 
n. |X tetrapneumon-ous + -ian.] I. . Of or 
pertaining to the Tetrapneumona. 
II. n. A spider belonging to the Tetrapneu- 
minia. 
tetrapneumonous (tet-rap-nu'mo-uus), a. [< 
NL. "tetrapneumonus, < Gr. rerpa-, four, + irvci'- 
/<uv,alung: see pneumonia.] Having four lungs. 
Specifically (a) Having four water-lungs, or respiratory 
trees. (6) Raving four lung-sacs, as a spider. 
tetrapod (tet'ra-pod), a. and n. [< Gr. rerpa- 
novf (-Trorf-), also rerpairodrif, four-footed, < rerpa-, 
four, + Troi'f (7ro(S-) = E. foot.'} I. a. Four-foot- 
ed; quadruped; specifically, haying only four 
perfect legs, as certain butterflies; of or per- 
taining to the Tetrapoda. 
II. . A four-footed animal ; a quadruped ; 
specifically, a member of the Tetrapoda. 
Tetrapoda (te-trap'o-da), w. pi. [NL.: see tet- 
rapod.] In entom., a division of butterflies hav- 
ing the first pair of legs more or less reduced 
and folded, not fitted for walking. 
tetrapodichnite (tet"ra-po-dik'nit), n. [< NL. 
Tetrapodichnites, < Gr. Terpdirovf, four-footed 
(see tetrapod), + Ixvof, a track, footstep: see 
iehnite.] In geol. , the footprint of a four-footed 
animal, as a saurian reptile, left on a rock. 
See iehnite. 
Tetrapodichnites (tet-ra-pod-ik-ni'tez), n. 
[NL. (Hitchcock): see tetrapodichnite.'] A hy- 
pothetical genus of animals whose tracks are 
known as tetrapodichuites. 
tetrapodous (te-trap'o-dus), a. [< tetrapod + 
-ous.] Same as tetrapod. 
tetrapody (te-trap'o-di), n. [< Gr. rerpanodia, 
a measure or lengtn of four feet, in pros, a te- 
trapody, < Terpdirovf , having four feet : see tetra- 
pod.] A group of four feet ; a colon, meter, 
or verse consisting of four feet. Amer. Jour. 
Philol.,X. 225. 
tetrapolis (te-trap'o-lis), n. [< Gr. rerpanoAtf, a 
district having four cities, prop, adj., having 
four cities, < rerpa-, four, + mSfof, a city.] A 
group or association of four towns ; a district 
or political division characterized by contain- 
ing four important cities. See tetrapolitan. 
" The garden opposite Euboia's coast " was inhabited by 
the Apolline Tetrapolis. 
Harrison and Verrall, Ancient Athens, p. xcvii. 
tetrapolitan (tet-ra-pol'i-tan), a. [< NL. tetra- 
politaniis, < tetrapolis, a group of four cities: 
see tetrapolis.] Of or belonging to a tetrapo- 
lis, or group of four towns; specifically [cap.], 
relating to the four towns of Constance, Lindau, 
Memmingen, and Strasburg Tetrapolitan Con- 
fession, a confession of faith presented at the Diet of 
Augsburg in 1530 by the representatives of the four cities 
named above. It resembled the Augsburg Confession, but 
inclined somewhat to Zwinglian views. 
tetraprostyle (tet-ra-pro'stil), a. [< Gr. rerpa-, 
four, + irpoimwlof , with pillars in front : see pro- 
style.] Noting a cla/ssical tem- 
ple having a portico of four 
columns in front of the cella 
or naos. 
tetrapteran (te-trap'te-ran), 
a. and n. [< tetrapter-ous + 
-an.] I. a. Having four wings, 
as an insect ; tetrapterous. 
II. . An insect which has 
four wings. 
tetrapterous (te-trap'te-rus), 
a. [< Gr. TETpaTn-fpof, four- 
winged, < rcrpa-, four, + irrepov, 
wing.] Having four wings, as 
a fruit or stem (see wing); te- 
trapteran. 
Tetrapteryx (te-trap'te-riks), 
w. [NL.(Thunberg, 18lg),<Gr. _ , 
rerpa-. four, + irrcpvf, wins. 1 '*"* a - The sam ' c ' 
A ' T ' , P V transversely cut. 
A generic name under which 
the Stanley crane of South Africa has been 
separated from Anthropoides as T. paradiseus. 
i. Tetrapterous Fruit 
of Hali-sia utrap- 
6258 
tetraptote (tet'rap-tot), n. [< Gr. 
with four cases, < rerpa-, four, + XTUOIC; (TTTUT-), 
a case in grammar.] In gram., a noun that has 
four cases only. 
Tetrapturus (tet-rap-tu'rus), n. [NL. (Rafi- 
nesque, 1810), for * Tetrapterurus, < Gr. rtrpa-, 
four, + KTepov, wing, fin, + oiipa, tail: in allu- 
sion to the wing-like caudal keels.] A genus 
of Histiophoridee, including certain sailnshes, 
sometimes specified as spear-fishes and hill- 
fishes. The type is the Mediterranean T. lie- 
lone; another species is T. albidiix. See cut 
under spear-fish, 2. 
tetrapyrenoilS (tet"ra-pi-re'nus), a. [< Gr. TC- 
rpa-, tour, + Ttvptfv, the stone of a fruit: see 
pyrene.] In bot., having four pyrenes orstones. 
tetra<iuetrous(te-trak'we-trus),a. [<Gr. rerpa-, 
four, + L. -quetriis, as in triquetrus, three-cor- 
nered: see triquetrous.] In bot., having four 
very sharp and almost winged corners, as the 
stems of some labiate plants. 
tetrarch (tet'rark or te'trark), n. and a. [< 
ME. tetrark, < OF. tetrarque, tetrarche, F. te- 
trarque = Sp. It. tetrarea = Pg. tetrarcha, < L. 
tetrarches, < Gr. Ttrpapxr/f, a leader of four com- 
fanies, a tetrarch, < rerpa-, four, + apxeiv , rule.] 
. n. 1. In the Roman empire, the ruler of the 
fourth part of a country or province in the East ; 
a viceroy; a subordinate ruler. 
Herod being tetrarch of Galilee. Luke lit. 1. 
2. The commander of a subdivision of a Greek 
phalanx. 
I condemn, as every one does, his inaction after the 
battle of Cannec ; and, in his last engagement with Africa- 
inis, I condemn no less his bringing into the front of the 
center, as became some showy tetrarch rather than Han- 
nibal, his eighty elephants, by the refractoriness of which 
he lost the battle. 
Landor, Imag. Conv., Scipio, Polybius, and Panaatius. 
II. t " Four principal or chief. [Rare and 
erroneous.] 
Tetrarch elements. Fuller. 
tetrarchate (tet'rar-kat), n. [< tetrarch + 
-ate 3 .] The district governed by a Roman tet- 
rarch, or the office or jurisdiction of a tetrarch. 
tetrarchical (te-trar'ki-kal), a. [< tetrarch + 
-ic-al.] Of or pertaining to a tetrarch or tet- 
rarchy. 
tetrarchy (tet'rar-ki), .; pi. tetrarchies (-kiz). 
[= F. tetrarchie = Sp. tetrarqtiia = Pg. It. te- 
trarchia, < L. tetrarchia, < Gr. rerpapxia, the 
power or government of a tetrarch, < rerpapxtf, 
a tetrarch : see tetrarch.] Same as tetrarchate. 
tetrascelus(te-tras'e-lus), n.; pi. tetrasceli (-11). 
[NL., < Gr. rerpaaKtMis, four-legged, < Tirpa-, 
four, + ovct/of, leg.] In teratol., a monster with 
four legs. 
tetraschistic (tet-ra-skis'tik), a. [< Gr. rerpa-, 
four, + axiapa, a cleft, division.] In biol., 
tending to divide into four parts, or marked by 
such division. Encyc. Brit., XIX. 834. 
tetraselenodont (tet*ra-se-le'no-dont), a. [< 
Gr. rcrpa-, four, + ae'Ai/vrj, moon, + bdovf (6<Wr-) 
= E. tooth.] Having four crescentic ridges, as 
a molar; characterized by such dentition, as a 
ruminant. Amer. Nat., May, 1890. 
tetrasemic (tet-ra-se'mik), a. [< LL. tetra- 
semus, < Gr. Terpaari/uif, < rerpa-, four, + 07^0, a 
sign, arijielov, a sign, mora: see disemic.] In 
anc.pros., containing or equal to two semeia or 
morse : as, a tetrasemic long (double the usual 
long) ; a tetrasemic foot (dactyl, anapest, spon- 
dee). 
tetrasepalous (tet-ra-sep'a-lus), a. [< Gr. re- 
rpa-, four, + NL. sepalum, sepal.] In bot., hav- 
ing four sepals. 
tetraspaston (tet-ra-spas'tqn), n. [< Gr. rerpa-, 
four, + oTrdv, pull', stretch: see spasm.] A 
machine in which four pulleys act together. 
[Rare.] Imp. Diet. 
tetraspermous (tet-ra-sper'mus), a. [< Gr. 
rerpa-, four, + a-n-ep/ia, seed: see sperw 1 .] In 
bot., four-seeded; producing four seeds to each 
flower, or in each cell of a capsule. 
tetraspherical (tet-ra-sfer'i-kal), a. [< Gr. 
rerpa-, four, + aifiaipa, sphere: see spherical.] 
Relating to four spheres. 
tetrasporange (tet'ra-spo-ranj), n. [< NL. tetra- 
s/ioruiiaiiim.] In bot, same as tetrasporaii(/ii/m. 
tetrasporangium (tet"ra-spo-raii'ji-um), n. ; 
pi. tetrasporangia (-a). [NL.,'< Gr. rerpa-, four, 
+ NL. sporangium, "q. v.] In bot., a sporangi- 
um or cell in which tetraspores are produced. 
tetraspore (tet'ra-spor), w. [< Gr. rerpa-, four, 
+ o-TTopd, seed: see spore 2 .] In bot., an asexu- 
ally produced spore of florideous alga? : so called 
from the circumstance that usually four are 
tetrasyllable 
produced by the division of the mother-cell. 
See spore 2 , cruciate 1 , 2, bispore, Floridtx. Also 
called s]iherospore. See cut under Algse. 
tetrasporic (tet-ra-spor'ik), a. [< tetraspore 
+ -ic.] In bot., composed of tetraspores. 
tetrasporoUS (tet'ra-spo-rus), a. [< tetraspore 
+ -oils.] In bot., of the nature of or having 
tetraspores. 
tetrastich ( tet'ra-stik), n . [Formerly also tetra- 
stic; < L. tetrasiichon, a poem in four lilies, < 
Gr. Terpdarixov, neut. of re Tpdorixof , in four rows 
or lines, < Tcrpa-, four, + arixof, row, line : see 
stich. Cf. distich, etc.] A group of four lines; 
a period, system, stanza, or poem consisting of 
four lines or four verses ; a quartet. Compare 
quatrain. 
I will . . . conclude with this TetrasKc, which my 
Brain ran upon in my Bed this Morning. 
Hmcell, Letters, I. i. 29. 
tetrastichlc (tet-ra-stik'ik), .. [< tetrastich 
+ -ic.] Pertaining to or constituting a tetra- 
stich or tetrastichs; consisting of tetrastichs, 
or groups of four lines. Atheneeum, No. 3300, 
p. 123. 
tetrastichous (te-tras'ti-kus), a. [< Gr. Terpa- 
artxof, in four rows or lines: see tetrastich.] 1. 
In hot., four-ranked; having four vertical rows: 
as, a tetrastichous spike, which has the flowers 
so arranged. 2. In :oi>l., four-rowed. 
tetrastigm (tet'ra-stim), ._ [< Gr. rerpa-, four, 
+ criyiia, a mark, a point.] A figure formed 
by four points in a plane with their six con- 
necting right lines. 
tetrastodn (te-tras'to-on), n. ; pi. tetrastoa (-a). 
[< MGr. TerpdoToov, an antechamber, neut. of 
Terpaoroof, having fourporticos,< Gr. -erpa-, four, 
+ orod, a portico: see stoa.] 
In arch., a courtyard with por- 
ticos, or open colonnades, on 
each of its four sides. Britton, 
Diet, of Arch, and Archseol. of 
Middle Ages. 
tetrastyle (tet'ra-stil), a. and 
n. [< L. tetrastylos (as a noun, 
tetrastylon), < Gr. rFTpdoru/oc, 
having four columns in front, < 
yrpa- four, + or^f column.] Plan of Tetrastyle 
I. a. In anc. arch, and kindred Temple of Fortuna 
styles, having or consisting of virillSl Rorae - 
four columns. Specifically (a) Having a portico of 
four columns front, as the temple of Fortuna Virilis at 
n 
Tetrastyle Portico. North Porch of the Erechtheum, Athens. 
Rome. (6) Having the ceiling or roof supported by four 
columns or pillars. 
There are two tetrastyle halls, one of which, erected by 
Darius, is the most interesting of the smaller buildings 
on the terrace. J. Fergvuon, Hist. Arch., I. 193. 
II. n. A structure having four pillars ; a com- 
bination or group of four pillars. 
An organ of very good workmanship, and supported by 
a Tetrattyle of very beautiful Gothic columns. 
Defoe, Tour through Great Britain, I. 373. (Davies.) 
tetrasyllable (tet"ra-si-lab'ik), a. [As tetra- 
si/llnh(le) + -ic.] Consisting of four syllables. 
tetrasyllabical (tet"ra-si-lab'i-kal), a. [< tetra- 
si/llnbie + -cl.] Same as tetrasyllable. 
tetrasyllable (tet'ra-sil-a-bl), . [= F. tetra- 
xyllabe = Sp. tetrasilabo, < Gr. reTpacrM/la/3of, < 
