tetrasyllable 
Tirpa-, four, + m'/./n.fi/, a syllable: see syllable.] 
A won I consisting of four syllables. 
tetrasymmetry (tet-ra-sim'e-tri), . In l>it>l., 
thai symmetry wlm-li may be expressed by 
tetramcral division into like or equal parts; 
symmetrical letramt'risni, as of some crinoids. 
(';>!. .lnr., XLV. ii. :iJ. [Hare.] 
tetrathecal (tet-ra-tho'kal), n. [< Or. rrrpa-, 
tour, + i/iiy, case': sec Ilii-ni.] In /<?.. liaving 
four locnlamenis or ea\ itios in the ovary. 
tetratheism (tel'i-a-the -i/.m), n. [< Or. rerpa-, 
four, + "<;, god. 4- -IXHI.] In tin-til., the doc- 
trine that in the (iodhead there are, in addition 
to the Divine Ksscncc. three persons or indi- 
vicluali/.alions the Father, the Sou, and the 
Holy Spirit making in the Godhead three 
and One instead of three in one. 
tetratheite (tet'ra-the-it), . [< Or. Tfrpa-, four, 
+ Ufni;. gixl. + -i//-.] One who believes in tet- 
ratheism. 
tetrathionlc (tet'ra-thi-on'ik), . [< Or. rerpa-, 
four, -4- Oeiov, snlphiir, + -1C.] Containing four 
atoms of sulphur Tetratnionlc acid, an unstable 
aciil, ll._.s,i i,.. It Is a colorless odorless acid liquid. 
tetratomic (tet-ra-tom'ik), a. [< Gr. Terparo- 
fios, fourfold (< rrrpa-, four, + -ro/iof, < rfyveiv, 
ra/telv, cut), -f -><.] Same as tetradlc. 
tetratone (tet'ra-ton), n. [< Gr. rtrpArovof, hav- 
ing four tones or notes, < 707x1-, four, + rover, 
tone.] In music, an interval composed of four 
whole steps or tones that is, an augmented 
fourth. Compare tritone. 
tetratop (tet'ra-top), . [< Or. rrrpa-, four, + 
rojrof, a place.] The four-dimensional angu- 
lar space inclosed between four straight lines 
drawn from a point not in the same three-di- 
mensional space. 
tetraxial (te-trak'si-al), . [< Gr. rtrpa-, four, 
+ L. mis, axis.] Having four axes, as the spic- 
ules of some sponges. 
tetraxile (te-trak'sil), a. Same as tetraxial. 
tetraxon (te-trak'sou), u. and . (X Gr. rerpn-, 
four, + a^uv, axis,' axle.] I. n. Having four 
axes, as a sponge-spicule ; tetraxial. 
II. n. A sponge-spicule with four axes. 
tetraxonian (tet-rak-so'ni-an), o. Same as 
MrajcoH. .liner. Nat., XXI. 9^8. 
Tetraxonida (tet-rak-son'i-da), n. pi. [NL. : 
see tetrujcon.] A group of sponges, a subor- 
der of Chondrosjtongiie or Spicutixpongix, char- 
acterized by the isolated tetraxial spicules. 
It contains the lit Ii 1st ids and choristids, in all 
about 12 families. 
tetrict (tct'rik), a. [< OF. tetrique = Sp. tetrico 
= Pg. It. tetrico, < L. tetricus, teetricus, harsh, 
sour, < tieter, offensive, foul.] Froward; per- 
verse; harsh; sour; crabbed. 
In a thick and cloudy air (saith Lemnlns) men are 
/./,;<, sad, and peevish. Burton, Anat. of Mel., p. 151. 
tetricalt (tet'ri-kal), ii. [< tetric + -al.] Same 
as tctrir. 
The entangling perplexities of school-men; the obscure, 
tetrical, nnd contradictory assertions of Popes. 
Rev. T. Adanu, Works, I. 92. 
tetricalnesst (tet'ri-kal-nes), . The state or 
quality of being tetric; frowardness; perverse- 
ness; crabbedness. Up. Oauden. 
tetricityt (te-tris'i-ti), n. [< L. tatricita(t-)x, 
gravity, seriousness, < tsptricttx, harsh, sour, se- 
rious: seetefrie.] Crabbedness; perverseness ; 
tctricalness. Hiiiley, 1731. 
tetricoust (tet'ri-kus), o. [< L. ttetricus : see 
MnV.l Same as tetric. Bniley, ITL'T. 
Tetrodon (tet'ro-don), n. [NL. (Linnseus, 1766), 
orip. /' t r<n>iln>i (Linneeus. 1758); < Gr. rerpa-, 
four, + Moi'f (O&IVT-) = E. ti>oth.~\ 1. A genus of 
plectoguath fishes, typical of the family Tetro- 
iti>titiil f T. The species are numerous in warm seas. T. 
turgidtu is an aliundant blower, puffer, or swell-toad of 
the Atlantic coast of the United States, attaining a foot 
in length. See cut under baUottn-fifth, 
2. [/. <.] A fish of this genus or of the family 
7V -Irniliniliilir. 
tetrodont (tet'ro-dont), a. and n. [< NL. Tetro- 
rfon(f-).] I. ii.'lii irlitli.. having (apparently) 
four teeth ; of or pertaining to the Tetrodontida. 
II. H. Same as tetrnilini, _. 
Also h trtiiHlitiit. 
Tetrodontidae (tet-ro-don'ti-de), 11. pi. [NL., 
< Tetrnilnn(t-) + -id;r.~\ A family of plectog- 
nath fishes, of which the typical genus is Tet- 
rodon; those globe-fishes whose jaws present 
the appearance of four large front teeth, owing 
to tlie presence of a median suture in each jaw. 
The species figured in the next euliimn in illustration of 
tlie family is fnuinl tn tile Attuntie m:ist of the United 
States as far north as Cape rod. Also Tftraodvntidsr. See 
also cut under baUoon-fiih. 
RabUt fiih, or Smooth Puffer (Lafotitkalut l*aifat*t), member 
of the I'flrcntontitim 
(From Report of U. S. Fish Commission.) 
tetryl (tet'ril), u. [< Gr. rerpa-, four, + -/.] 
The hypothetical radical C 4 H 9 , the fourth mem- 
berof the C H II. JM , scries: same as hiityl. 
tetrylamine (tet'ril-am-in), n. [< tetryl + am- 
ine7\ A colorless transparent liquid, having a 
strongly ammoniacal and somewhat aromatic 
odor.and producing dense white fumes with hy- 
drochloric acid: CiHgNH2- It is produced by the 
action of potash on butyl eyanate. It baa basic properties, 
and forms crystalline salts. Also called butylamine. 
tetrylene (tet'ri-len), n. [< tetryl + -ene.] 
Oil-gas (C^Hg); a gaseous hydrocarbon of the 
olefine series, first obtained by the distillation 
of oil. . See coal-gax. Also called butylene. 
tettt (tet), n. [Origin obscure; cf. tate.] A 
plait; a knot. 
At Ilka fett of her horse's mane 
Hung fifty siller hells and nine. 
Thumat the Rhymer (Child's Ballads, I. 100). 
tetter (tet'er), . [Formerly also tcttar ; < ME. 
teter, tetci-e, < AS. teter, tetter; cf. OHG. :itaroli, 
MHG. ziteroch, G. dial, zitteroch, zittrich (cf. G. 
/ mat), tetter; cf. Skt. dadru, dadruka, cuta- 
neous eruption, miliary herpes, Lith. dederine, 
herpes, tetter, scurf, LL. derbif>sw>, scabby.] 
1 . A vague name of several cutaneous diseases, 
as herpes, eczema, and impetigo. 
A most Instant tetter liark'd about, 
Host lazar-llke, with vile and loathsome crust, 
All my smooth body. Shale., Hamlet, L 5. 71. 
Tls a Disease. I think, 
A stubborn Tetter that's not cur'd with Ink. 
Cvivjrevt, Husband his own Cuckold, Prol. 
2. A cutaneous disease of animals, which 
spreads on the body in different directions, and 
occasions a troublesome itching. It may be 
communicated to man Blister tetter, pemphi- 
gus. Crusted tetter, impetigo. Eattoi tetter, lu- 
pus. Humid or moist tetter, eczema. Scaly tetter, 
psoriasis. 
tetter (tet'er), r. t. [< tetter, .] To affect 
with or as with the disease called tetter. 
Those measles 
Which we disdain should tetter us. 
Shot., Cor., ill. 1. 79. 
tetter-berry (tet'er-ber''i), . The common 
bryony, Bryonia dioica, esteemed a cure for 
tetter. [Prov. Eng.] 
tetterous (tet'er-us), a. [< tetter + -ous.] Hav- 
ing the character of tetter. 
Noli-me-tangere, touch me not. Is a tetterous eruption, 
thus called from it soreness or difficulty of cure. 
Quincy. (Latkam.) 
tetter-tottert (tet'er-tot'er), r. i. Same as tit- 
ti'r-tnttir. 
tetterwort (tet'er-wert), n. The larger celan- 
dine, Chelidiinium majus, so named from its use 
in cutaneous diseases; also, in America, some- 
times the bloodroot, Sangninaria Canadensis. 
tettiga (tet'i-gS), . Same as tettix, 1. 
Tettiginae (tet-T-ji'ne), n.pl. [NL.,< Tcttix (-iy-) 
+ -i.] A prominent snbfamily of short- 
horned grasshoppers, or Acridiidx, containing 
the forms sometimes known as grouse-locusts. 
They are small species In which the pronotum is length- 
ened posteriorly into a projection as long as the wings, 
or longer. They are very active, and are found abundantly 
in low wet meadows and along watercourses. The princi- 
pal genera are Tettix, Tettiyidea, and Batradiedra. Also, 
as a family, Tettigida. 
Tettigonia (tet-i-go'ni-ft), n. fNL. (Linnaeus, 
1748), < Gr. rims (7(-r/j-), a cicada.] A very 
large and somewhat loosely characterized ge- 
nus of leaf-hoppers, typical of the family Trtti- 
!/iiiidir. The British Museum catalogue gives 
1 _7 species, from all parts of the world large- 
ly, however, from South America. 
tettigonian (tet-i-go'ni-an). H. [< TeUigonia + 
-an.] A leaf-hopper of the genus Tettigonia or 
some related genus. 
Tettigoniidse (tet'i-go-ni'i-de), n. pi. [NL., < 
Tettigiinin + -idir.] A large and important fam- 
ily of leaf -hoppers, typified by the genus Ti-tti- 
</<ihi. They are small to medium-siied forms with lona 
bmties, an expanded faee, tiristle-shaped anteiiniF placed in 
n cavity heiiratll the rim nf the vertex, anil iK-elli upon the 
vertex. It Is a wide-spread grtiup, occurring most abun- 
dantly In tropical regions. Species of /"rororwn and Diedrn- 
Teuthididae 
cejihala Injure mips In the United Stater, and members of 
the fiiiniiT KI-IHI-. secrete large quantitlrs of very liquid 
liniietilew, pr'iducliiK the phenomena of no called "weep- 
ing trees." Also Tettigonladx, TrttiymMa. 
tettisht (tet'isli), ii. Hame as tenti.--li. 
tettix itet'iks). a. [ir. T-7Ti;, a cicada.] 1. A 
cicada. 2. (''(/).] [NL.] A genus of Arridi- 
ni.-i . or short-homed grasshoppers, typical of 
the subfamily Tettiginir, and having the prono- 
tnni horizontal and the antcnnie thirteen- or 
fonrteen-jointcd. Nine npccies are known in 
the United States. 
tettyt (tct'i). n. [Cf. I- tiixl,, liiitixh.] Techy; 
peevish; irritable. 
If they lose, though It lie but n trifle, . . . they are so 
cholerlck and tftty that no man may i>eak with them. 
Burton, Anat. of Mel., p. 119. 
tench, teugh (tiich), . A dialectal (Scotch) 
form of li'iii/h. 
Unco thick In the soles, u ye may weel mind, forbye 
being '!/;// in the upper-leather. 
Seatt, Old Mortality, xxvill. 
tenchit (tm-h'it), . [An imitative name. Cf. 
in irit and tewhit.] The lapwing, KantHiw cris- 
tutiix; the pewit. [Scotch.] 
Teucrian (tu'kri-an), . and n. [< L. Tencri, Tev- 
cria (see def.), 4-' -.] I. . Relating to the 
ancient Trojans (Teucri) or to the Troad. 
II. H. One of the Teucri; one of the inhabi- 
tants of ancient Teucria, or the Troad; a Trojan . 
Teucrium (tu'kri-um), n. [NL. (Bivinus, 1690; 
earlier in Matthioli, 1554), < L. teucrion, < Gr. 
Tcvuptov, germander, spleenwort; appar. con- 
nected with Trtxpoc, Teucer, and so said to have 
been used medicinally by Teucer, first king of 
Troy.] A genus of gamopetalous plants, of the 
order fMbiatie and tribe Ajuyoidete. It Is charac- 
terized by flowers with a short corolla-tube, a prominent 
lower lip, the other lobes small and Inconspicuous, and 
the four stamens far exserted from a posterior fissure. It 
Includes almost 100 species, scattered over many temper- 
ate and warm regions, especially near the Mediterranean. 
They are herbs or shrubs of varied habit ; the leaves are 
either entire, toothed, or cut, and the flowers are in axil- 
lary clusters, or terminal spikes, racemes, or heads. The 
species are known in general as germander (which see, 
and compare poly, and herb mantle, under herb). Eng- 
land and the United States contain each 4 different spe- 
cies, of which 7'. Caitadeiutr, the common American ger- 
mander, of low open 
ground and fence- 
rows from jtonada to 
Texas anor Mexico, 
bears an erect spike 
of rather conspicuous 
reddish-purple flow- 
ers. T.Cuben*e,vrli\e\y 
ili-ti iiniteil from the 
West Indies. Texas, 
and California to 
Buenos Ayres, repre- 
sents the section of the 
genus with small soli- 
tar)' flowers in theaxils 
of incised or multind 
leaves. The other 
American species are 
western or southwest- 
ern. Many species 
were once highly es- 
teemed in medicine, 
but are now discarded; 
especially the three 
following, which are 
widely dispersed 
through Europe and 
Asia: T. Cham/eitry*, 
the wall-germander, 
once used for rheuma- 
tism and as a febrifuge ; T. Scordtum, the water-german- 
der, a creeping marsh-plant with the odor of garlic when 
bruised, once used as an antiseptic, etc. ; and T. Seoro- 
dimia, the wood-, garlic-, or mountain-sage, a very bitter 
plant resembling hops In tast and odor. (See cut under 
7>iWi/ii(7i/im, and compare, ainbrrmf and feorttivm. ) Many 
other species have a pleasant fragrance. T. Marwm, the 
cat-thyme, is In use for its scent, and is remarkable u a 
sternutatory. T. eorymbonim of Australia Is there known 
as litorire. T. brttinitum, the Madeira hetony, with loose 
spikes of fragrant crimson flowers, and several other spe- 
cies from Madeira, are handsome greenhouse shrubs. T. 
frutiea'u, the tree- germander of Spain, and T. racemmtm, 
a dwarf evergreen of Australia, are also occasionally cul- 
tivated, and many annual species are showy border-plants. 
teugh (tiich), (i. See tench. 
Teut. Aii abbreviation of Teutonic. 
Teuthidae (tu'thi-de), n. pi. FNL.. < Teuthis + 
-ifjp.] 1. In concli., a family of decacerons 
cephalopoda, named from the genus Tenthis: 
synonvmous with Loliyinidie. 2. In ichth., 
same as Teiithidiittr. De Kay, 1842. 
tenthidan (tu'thi-dan), a. and H. [< Teutliidte + 
-nil.] I. a. Of or pertaining to the Teuthid*. 
II. . A member of the Teuthidjf. 
Teuthididae (tiVtlnd'i-de). . //. (SI,., < Teti- 
tln<. J. + -idif.] A family of aoanthoptervgian 
fishes, named from the genus Teuthix, ana vari- 
ously constituted, (o) Same as TruthidaMta. Bona- 
parte, 1831. (ft) Same as Siyanidjr. (c) Same as Acanlhu- 
ridx. 
Part of the Flowering Stem of 
American Germander ( TrUft-iMm Catta. 
re}, a. a (lower. 
Upper 
'. r. 
