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- English Word Terebratula Definition A genus of brachiopods which includes many living and some fossil species. The larger valve has a perforated beak, through which projects a short peduncle for attachment. Called also lamp shell.
 - English Word Terebratulae Definition of Terebratula
 - English Word Terebratulid Definition Any species of Terebratula or allied genera. Used also adjectively.
 - English Word Terebratuliform Definition Having the general form of a terebratula shell.
 - English Word Teredine Definition A borer; the teredo.
 - English Word Teredines Definition of Teredo
 - English Word Teredo Definition A genus of long, slender, wormlike bivalve mollusks which bore into submerged wood, such as the piles of wharves, bottoms of ships, etc.; -- called also shipworm. See Shipworm. See Illust. in App.
 - English Word Teredos Definition of Teredo
 - English Word Terephthalate Definition A salt of terephthalic acid.
 - English Word Terephthalic Definition Of, pertaining to, or designating, a dibasic acid of the aromatic series, metameric with phthalic acid, and obtained, as a tasteless white crystalline powder, by the oxidation of oil of turpentine; -- called also paraphthalic acid. Cf. Phthalic.
 - English Word Teret Definition Round; terete.
 - English Word Terete Definition Cylindrical and slightly tapering; columnar, as some stems of plants.
 - English Word Teretial Definition Rounded; as, the teretial tracts in the floor of the fourth ventricle of the brain of some fishes.
 - English Word Teretous Definition Terete.
 - English Word Terga Definition of Tergum
 - English Word Tergal Definition Of or pertaining to back, or tergum. See Dorsal.
 - English Word Tergant Definition Showing the back; as, the eagle tergant.
 - English Word Tergeminal Definition Alt. of Tergeminate
 - English Word Tergeminate Definition Thrice twin; having three pairs of leaflets.
 - English Word Tergeminous Definition Threefold; thrice-paired.
 - English Word Tergiferous Definition Carrying or bearing upon the back.
 - English Word Tergite Definition The dorsal portion of an arthromere or somite of an articulate animal. See Illust. under Coleoptera.
 - English Word Tergiversate Definition To shift; to practice evasion; to use subterfuges; to shuffle.
 - English Word Tergiversation Definition The act of tergiversating; a shifting; shift; subterfuge; evasion.
 - English Word Tergiversation Definition Fickleness of conduct; inconstancy; change.
 - English Word Tergiversator Definition One who tergiversates; one who suffles, or practices evasion.
 - English Word Tergum Definition The back of an animal.
 - English Word Tergum Definition The dorsal piece of a somite of an articulate animal.
 - English Word Tergum Definition One of the dorsal plates of the operculum of a cirriped.
 - English Word Terin Definition A small yellow singing bird, with an ash-colored head; the European siskin. Called also tarin.