Terebene, ter′ē-bēn, n. a light-yellow liquid, obtained by treating oil of turpentine with sulphuric acid, used as a disinfectant.—adj. Tereb′ic, pertaining to turpentine.—n. Ter′ebinth, the turpentine-tree.—adj. Terebinth′ine. [L.,—Gr. terebinthos.]

Terebra, ter′ē-bra, n. a Roman engine for making a breach in a wall: the borer or ovipositor of various insects.—adj. Ter′ebrant.—n. a borer, a bore.—v.t. Ter′ebrāte, to bore.—adj. provided with a borer.—n. Terebrā′tion. [L.]

Terebratula, ter-ē-brat′ū-la, n. a genus of deep-sea Brachiopods, from the form of the ventral valve of their shell termed Lamp-shells.—n. Terebrat′ulid, one of this genus.—adj. Terebrat′ūliform.—n. Terebrat′ulite, a fossil terebratulid.—adj. Terebrat′ūloid (also n.).

Teredo, tē-rē′do, n. the ship-worm, a worm very destructive in boring into wood.—Also Ter′edine. [L.,—Gr. terēdōn, from teirein, to wear away.]

Terek, ter′ek, n. a kind of sandpiper, of the genus Terē′kia.

Terentian, ter-en′shi-an, adj. pertaining to the Roman comic poet Terence, P. Terentius Afer (b. 195 B.C.).

Teres, tē′rēz, n. a terete muscle.—adjs. Terete′, cylindrical and tapering, columnar; Tereticau′date, round-tailed. [L. teres, terĕtis, smooth, terĕre, to rub.]

Tergal, ter′gal, adj. pertaining to the back, dorsal.—adjs. Ter′gant (her.), turning the back, recursant; Tergif′erous, bearing on the back.—n. Ter′gite, the tergum or back of one of the somites or segments of an arthropod, &c.—adj. Tergit′ic.—n. Ter′gum, the back, dorsum, or notum, as of an arthropod:—pl. Ter′ga. [L. tergum, the back.]

Tergeminate, ter-jem′i-nāt, adj. thrice double.—Also Tergem′inal, Tergem′inous.

Tergiversation, tėr-ji-vėr-sā′shun, n. a shuffling or shifting: subterfuge: fickleness of conduct.—v.i. Ter′giversate, to practise or use evasion.—n. Ter′giversātor. [L., from tergum, the back, versāri, to turn.]