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Tetradrachma :: Tetradrachma (n.) A silver coin among the ancient Greeks, of the value of four drachms..

Tetradecane :: Tetradecane (n.) A light oily hydrocarbon, C14H30, of the marsh-gas series; -- so called from the fourteen carbon atoms in the molecule..

Tetradite :: Tetradite (n.) A person in some way remarkable with regard to the number four, as one born on the fourth day of the month, or one who reverenced four persons in the Godhead..

Tetradont :: Tetradont (a. & n.) See Tetrodont.

Phatagin :: Phatagin (n.) The long-tailed pangolin (Manis tetradactyla); -- called also ipi.

Amphipoda :: Amphipoda (n. pl.) A numerous group of fourteen -- footed Crustacea, inhabiting both fresh and salt water. The body is usually compressed laterally, and the anterior pairs or legs are directed downward and forward, but the posterior legs are usually turned upward and backward. The beach flea is an example. See Tetradecapoda and Arthrostraca..

Stateroom :: Stater (n.) The principal gold coin of ancient Grece. It varied much in value, the stater best known at Athens being worth about £1 2s., or about $5.35. The Attic silver tetradrachm was in later times called stater..

Gymnodont :: Gymnodont (n.) One of a group of plectognath fishes (Gymnodontes), having the teeth and jaws consolidated into one or two bony plates, on each jaw, as the diodonts and tetradonts. See Bur fish, Globefish, Diodon..

Tetrad :: Tetrad (n.) A tetravalent or quadrivalent atom or radical; as, carbon is a tetrad..

Tetradynamian :: Tetradynamian (a.) Alt. of Tetradynamou.

Arthrostraca :: Arthrostraca (n. pl.) One of the larger divisions of Crustacea, so called because the thorax and abdomen are both segmented; Tetradecapoda. It includes the Amphipoda and Isopoda..

Tetradymite :: Tetradymite (n.) A telluride of bismuth. It is of a pale steel-gray color and metallic luster, and usually occurs in foliated masses. Called also telluric bismuth..

Tetradic :: Tetradic (a.) Of or pertaining to a tetrad; possessing or having the characteristics of a tetrad; as, a carbon is a tetradic element..

Zenick :: Zenick (n.) A South African burrowing mammal (Suricata tetradactyla), allied to the civets. It is grayish brown, with yellowish transverse stripes on the back. Called also suricat..

Tamandu :: Tamandu (n.) A small ant-eater (Tamandua tetradactyla) native of the tropical parts of South America.

Tetradynamia :: Tetradynamia (n. pl.) A Linnaean class of plants having six stamens, four of which are longer than the others..

Tetradactyl :: Tetradactyl (a.) Alt. of Tetradactyl.

Tetradecapoda :: Tetradecapoda (n. pl.) Same as Arthrostraca.

Tetradynamian :: Tetradynamian (n.) A plant of the order Tetradynamia.

Valence :: Valence (n.) The degree of combining power of an atom (or radical) as shown by the number of atoms of hydrogen (or of other monads, as chlorine, sodium, etc.) with which it will combine, or for which it can be substituted, or with which it can be compared; thus, an atom of hydrogen is a monad, and has a valence of one; the atoms of oxygen, nitrogen, and carbon are respectively dyads, triads, and tetrads, and have a valence respectively of two, three, and four..

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