Webster's Unabridged Dictionary - Letter T - Page 25
Tetragynian (a.) Alt. of Tetragynous
Tetragynous (a.) (Bot.) Belonging to the order Tetragynia; having four styles.
Tetrahedrite (n.) 黝銅礦是一種銅、銻的硫鹽礦物，分子式為(Cu, Fe)12 Sb4 S13，通常與銅、銀、鉛和鋅的礦物共生，雖然黝銅礦的主要成分是銅，但有的時候會被銀、鋅、汞、鐵等物質置換，例如如銀黝銅礦、黑黝銅礦（含汞）。銀黝銅礦的銀含量高達18%，所以有的時候黝銅礦也是一種很值錢的礦物。黝銅礦是1845年在德國的薩克森被鑑別出來。
Tetrahedrite is a copper antimony sulfosalt mineral with formula: (Cu, Fe)12 Sb4 S13. It is the antimony endmember of the continuous solid solution series with arsenic-bearing tennantite. Pure endmembers of the series are seldom if ever seen in nature. Of the two, the antimony rich phase is more common. Other elements also substitute in the structure, most notably iron and zinc, along with less common silver, mercury and lead. Bismuth also substitutes for the antimony site and bismuthian tetrahedrite or annivite is a recognized variety. The related, silver dominant, mineral species freibergite, although rare, is notable in that it can contain up to 18% silver.
Tetrahedrite gets its name from the distinctive tetrahedron shaped cubic crystals. The mineral usually occurs in massive form, it is a steel gray to black metallic mineral with Mohs hardness of 3.5 to 4 and specific gravity of 4.6 to 5.2.
It occurs in low to moderate temperature hydrothermal veins and in some contact metamorphic deposits. It is a minor ore of copper and associated metals. It was first described in 1845 for occurrences in Freiberg, Saxony, Germany.
Tetrahedrite (n.) (Min.) 【礦】黝銅礦 A sulphide of antimony and copper, with small quantities of other metals. It is a very common ore of copper, and some varieties yield a considerable presentage of silver. Called also gray copper ore, fahlore, and panabase.
Tetrahedral (a.) 有四面的，四面體的 Having, or composed of, four sides.
Tetrahedral (a.) (Crystallog.) Having the form of the regular tetrahedron.
Tetrahedral (a.) (Crystallog.) Pertaining or related to a tetrahedron, or to the system of hemihedral forms to which the tetrahedron belongs.
Compare: Crystallography
Crystallography (n.) 結晶學；晶體繞射法 The branch of science concerned with the structure and properties of crystals.
‘She threw herself into science - physics, chemistry and crystallography.’
Tetrahedral angle (Geom.), A solid angle bounded or inclosed by four plane angles.
Tetrahedrally (adv.) In a tetrahedral manner.
Tetrahedrite (n.) (Min.) 【礦】黝銅礦 A sulphide of antimony and copper, with small quantities of other metals. It is a very common ore of copper, and some varieties yield a considerable presentage of silver. Called also gray copper ore, fahlore, and panabase.
Tetrahedron (n.) (Geom.) 四面體 A solid figure inclosed or bounded by four triangles.
Note: In crystallography, the regular tetrahedron is regarded as the hemihedral form of the regular octahedron.
Regular tetrahedron (Geom.), A solid bounded by four equal equilateral triangles; one of the five regular solids.
Tetrahedron (n.) Any polyhedron having four plane faces.
Tetrahexahedral (a.) (Crystallog.) Pertaining to a tetrahexahedron.
Tetrahexahedron (n.) (Crystallog.) 四六面體；二十四面體 A solid in the isometric system, bounded by twenty-four equal triangular faces, four corresponding to each face of the cube.
Compare: Isometric
Isometric (a.) 等角的；等軸的；等距的 Isometric drawing uses a method of drawing a shape with three dimensions using two dimensions.
// Isometric projection.
Tetrakishexahedron (n.) (Crystallog.) A tetrahexahedron.
Tetrakosane (n.) (Chem.) A hydrocarbon, C24H50, resembling paraffin, and like it belonging to the marsh-gas series; -- so called from having twenty-four atoms of carbon in the molecule.
Tetralogy (n.) (Gr. Drama) A group or series of four dramatic pieces, three tragedies and one satyric, or comic, piece (or sometimes four tragedies), represented consequently on the Attic stage at the Dionysiac festival.
Note: A group or series of three tragedies, exhibited together without a fourth piese, was called a trilogy.
Tetralogy (n.) A series of four related works (plays or operas or novels).
Tetramera (n. pl.) (Zool.) A division of Coleoptera having, apparently, only four tarsal joints, one joint being rudimentary.
Tetramerous (a.) (Bot.) Having the parts arranged in sets of four; as, a tetramerous flower.
Tetramerous (a.) (Zool.) Having four joints in each of the tarsi; -- said of certain insects.
Tetramerous (a.) Having or consisting of four similar parts; tetramerous flowers.
Tetrameter (n.) (GR. & Latin Pros.) A verse or line consisting of four measures, that is, in iambic, trochaic, and anapestic verse, of eight feet; in other kinds of verse, of four feet.
Verse (n.) A line consisting of a certain number of metrical feet (see Foot, n., 9) disposed according to metrical rules.
Note: Verses are of various kinds, as hexameter, pentameter, tetrameter, etc., according to the number of feet in each. A verse of twelve syllables is called an Alexandrine. Two or more verses form a stanza or strophe.
Verse (n.) Metrical arrangement and language; that which is composed in metrical form; versification; poetry.
Such prompt eloquence Flowed from their lips in prose or numerous verse. -- Milton.
Virtue was taught in verse. -- Prior.
Verse embalms virtue. -- Donne.
Verse (n.) A short division of any composition. Specifically:
Verse (n.) (a) A stanza; a stave; as, a hymn of four verses.
Note: Although this use of verse is common, it is objectionable, because not always distinguishable from the stricter use in the sense of a line.
Verse (n.) (b) (Script.) One of the short divisions of the chapters in the Old and New Testaments.
Note: The author of the division of the Old Testament into verses is not ascertained. The New Testament was divided into verses by Robert Stephens [or Estienne], a French printer. This arrangement appeared for the first time in an edition printed at Geneva, in 1551.
Verse (n.) (c) (Mus.) A portion of an anthem to be performed by a single voice to each part.
Verse (n.) A piece of poetry. "This verse be thine." -- ope.
Blank verse, Poetry in which the lines do not end in rhymes.
Heroic verse. See under Heroic.
Tetrameter (n.) A verse line having four metrical feet.
Tetramethylene (n.) (Chem.) A hypothetical hydrocarbon, C4H8, analogous to trimethylene, and regarded as the base of well-known series or derivatives.
Tetramethylene (n.) (Chem.) Sometimes, an isomeric radical used to designate certain compounds which are really related to butylene.
Tetramorph (n.) (Christian Art) The union of the four attributes of the Evangelists in one figure, which is represented as winged, and standing on winged fiery wheels, the wings being covered with eyes. The representations of it are evidently suggested by the vision of Ezekiel (ch. i.)
Tetrandria (n. pl.) (Bot.) A Linnaean class of plants having four stamens. Tetrandrian
Tetrandrian (a.) Alt. of Tetrandrous
Tetrandrous (a.) (Bot.) Belonging to the class Tetrandria.
Tetraonid (n.) (Zool.) A bird belonging to the tribe of which the genus Tetrao is the type, as the grouse, partridge, quail, and the like. Used also adjectively.
Tetrapetalous (a.) (Bot.) Containing four distinct petals, or flower leaves; as, a tetrapetalous corolla. Tetrapharmacom
Tetrapharmacom (n.) Alt. of Tetrapharmacum
Tetrapharmacum (n.) (Med.) A combination of wax, resin, lard, and pitch, composing an ointment. -- Brande & C.
Furfuran, (n.) (Chem.) A colorless, oily substance, C4H4O, obtained by distilling certain organic substances, as pine wood, salts of pyromucic acid, etc.; -- called also tetraphenol.
Tetraphenol (n.) (Chem.) Furfuran. [Obs.]
Tetraphyllous (a.) (Bot.) Having four leaves; consisting of four distinct leaves or leaflets.
Tetrapla (n.) Note: etymologically pl., but syntactically sing.
A Bible consisting of four different Greek versions arranged in four columns by Origen; hence, any version in four languages or four columns.
Tetrapneumona (n. pl.) (Zool.) 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.
Tetrapnuemonian (n.) (Zool.) One of the Tetrapneumona.
Tetrapod (n.) (Zool.) An insect characterized by having but four perfect legs, as certain of the butterflies.
Tetrapody (n.) A set of four feet; a measure or distance of four feet.
Tetrapteran (n.) (Zool.) An insect having four wings.
Tetrapterous (a.) (Zool.) Having four wings.
Tetraptote (n.) (Gram.) A noun that has four cases only. -- Andrews.
Tetrarch (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.
Tetrarch (a.) Four. [Obs.] -- Fuller.
Tetrarchate (n.) (Rom. Antiq.) A tetrarchy.
Tetrarchical (a.) Of or pertaining to a tetrarch or tetrarchy. -- Bolingbroke.
Tetrarchies (n. pl. ) of Tetrarchy
Tetrarchy (n.) (Rom. Antiq.) The district under a Roman tetrarch; the office or jurisdiction of a tetrarch; a tetrarchate.
Tetraschistic (a.) (Biol.) Characterized by division into four parts.
Tetrasepalous (a.) (Bot.) Having four sepals.
Tetraspaston (n.) (Mach.) A machine in which four pulleys act together. -- Brande & C.
Tetraspermous (a.) (Bot.) Having four seeds.
Tetraspermous plant, A plant which produces four seeds in each flower.
Tetraspore (n.) (Bot.) A nonsexual spore, one of a group of four regularly occurring in red seaweeds. -- Tet`ra*spor"ic, a.
Tetrastich (n.) A stanza, epigram, or poem, consisting of four verses or lines. -- Pope.
Tetrastyle (a.) (Arch.) Having four columns in front; -- said of a temple, portico, or colonnade. -- n. A tetrastyle building. Tetrasyllabic
Tetrastyle (n.) A tetrastyle building. Tetrasyllabic
Tetrasyllabic (a.) Alt. of Tetrasyllabical
Tetrasyllabical (a.) Consisting of, or having, four syllables; quadrisyllabic.
Tetrasyllable (n.) A word consisting of four syllables; a quadrisyllable.
Tetrathecal (a.) (Bot.) Having four loculaments, or thecae.
Tetrathionate (n.) (Chem.) A salt of tetrathionic acid.
Tetrathionic (a.) (Chem.) Of, pertaining to, or designating, a thionic derivative, H2S4O6, of sulphuric acid, obtained as a colorless, odorless liquid.
Tetratomic (a.) (Chem.) Consisting of four atoms; having four atoms in the molecule, as phosphorus and arsenic.
Tetratomic (a.) (Chem.) Having a valence of four; quadrivalent; tetravalent; sometimes, in a specific sense, having four hydroxyl groups, whether acid or basic.
Tetravalence (n.) (Chem.) The quality or state of being tetravalent; quadrivalence.
Tetravalent (a.) (Chem.) Having a valence of four; tetratomic; quadrivalent.
Tetraxile (a.) (Zool.) Having four branches diverging at right angles; -- said of certain spicules of sponges.
Tetrazo- (a.) (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.
Tetrazone (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. Tetric
Tetric (a.) Alt. of Tetrical
Tetrical (a.) Forward; perverse; harsh; sour; rugged. [Obs.] -- Tet"ric*al*ness, n.
Tetricity (n.) Crabbedness; perverseness. [Obs.]
Tetricous (a.) Tetric. [Obs.]
Tetrinic (a.) (Chem.) Of, pertaining to, or designating, a complex ketonic acid, C5H6O3, obtained as a white crystalline substance; -- so called because once supposed to contain a peculiar radical of four carbon atoms. Called also acetyl-acrylic acid.
Tetrodon (n.) (Zool.) Any one of numerous species of plectognath fishes belonging to Tetrodon and allied genera. Each jaw is furnished with two large, thick, beaklike, bony teeth. [Written also tetradon.]
Note: The skin is usually spinous, and the belly is capable of being greatly distended by air or water. It includes the swellfish, puffer (a), and similar species.
Tetrodont (a.) (Zool.) Of or pertaining to the tetrodons. -- n. A tetrodon. [Written also tetradont, and tetraodont.].
Tetrodont (n.) A tetrodon.
Tetrol (n.) (Chem.) A hypothetical hydrocarbon, C4H4, analogous to benzene; -- so called from the four carbon atoms in the molecule.
Tetrol phenol, furfuran. [Obs.]
Tetrolic (a.) (Chem.) Of, pertaining to, or designating, an acid, C3H3.CO2H, of the acetylene series, homologous with propiolic acid, obtained as a white crystalline substance.
Tetroxide (n.) (Chem.) An oxide having four atoms of oxygen in the molecule; a quadroxide; as, osmium tetroxide, OsO4.
Tetryl (n.) (Chem.) Butyl; -- so called from the four carbon atoms in the molecule.
Tetrylene (n.) (Chem.) Butylene; -- so called from the four carbon atoms in the molecule.
Tetter (n.) (Med.) A vesicular disease of the skin; herpes. See Herpes. See Herpes.
Honeycomb tetter (Med.), Favus.
Moist tetter (Med.), Eczema.
Scaly tetter (Med.), Psoriasis.
Tetter berry (Bot.), The white bryony.
Tettered (imp. & p. p.) of Tetter
Tettering (p. pr. & vb. n.) of Tetter
Tetter (v. t.) To affect with tetter. -- Shak.
Eczema (n.) (Med.) An inflammatory disease of the skin, characterized by the presence of redness and itching, an eruption of small vesicles, and the discharge of a watery exudation, which often dries up, leaving the skin covered with crusts; -- called also tetter, milk crust, and salt rheum.
Tetterous (a.) Having the character of, or pertaining to, tetter.
Tetter-totter (n.) A certain game of children; seesaw; -- called also titter-totter, and titter-cum-totter.
Tetterwort (n.) (Bot.) A plant used as a remedy for tetter, -- in England the calendine, in America the bloodroot.
Bloodroot (n.) (Bot.) A plant ({Sanguinaria Canadensis), with a red root and red sap, and bearing a pretty, white flower in early spring; --called also puccoon, redroot, bloodwort, tetterwort, turmeric, and Indian paint. It has acrid emetic properties, and the rootstock is used as a stimulant expectorant. See Sanguinaria.
Note: In England the name is given to the tormentil, once used as a remedy for dysentery.
Tettigonian (n.) (Zool.) Any one of numerous species of Hemiptera belonging to Tettigonia and allied genera; a leaf hopper.
Tettish (a.) Captious; testy. [Written also teatish.] [Obs.] -- Beau. & Fl.
Tettix (n.) (Zool.) The cicada. [Obs. or R.]
Tettix (n.) (Zool.) A genus of small grasshoppers.
Tetty (a.) Testy; irritable. [Obs.] -- Burton.
Teufit (n.) (Zool.) The lapwing; -- called also teuchit. [Prov. Eng.]
Teuk (n.) (Zool.) The redshank. [Prov. Eng.]
Teutons (n. pl. ) of Teuton
Teutones (n. pl. ) of Teuton
Teuton (n.) One of an ancient German tribe; later, a name applied to any member of the Germanic race in Europe; now used to designate a German, Dutchman, Scandinavian, etc., in distinction from a Celt or one of a Latin race.
Teuton (n.) A member of the Teutonic branch of the Indo-European, or Aryan, family.
Teutonic (a.) Of or pertaining to the Teutons, esp. the ancient Teutons; Germanic.
Teutonic (a.) Of or pertaining to any of the Teutonic languages, or the peoples who speak these languages.
Teutonic languages, A group of languages forming a division of the Indo-European, or Aryan, family, and embracing the High German, Low German, Gothic, and Scandinavian dialects and languages.
Teutonic order, A military religious order of knights, established toward the close of the twelfth century, in imitation of the Templars and Hospitalers, and composed chiefly of Teutons, or Germans. The order rapidly increased in numbers and strength till it became master of all Prussia, Livonia, and Pomerania. In its decay it was abolished by Napoleon; but it has been revived as an honorary order.
Teutonic (n.) The language of the ancient Germans; the Teutonic languages, collectively.
Teutonicism (n.) A mode of speech peculiar to the Teutons; a Teutonic idiom, phrase, or expression; a Teutonic mode or custom; a Germanism.
Tewed (imp. & p. p.) of Tew