| terminator | <molecular biology> DNA sequence at the end of a transcription unit that causes RNA polymerase to stop transcription. (13 Jan 1998) |
|---|---|
| terminator regions (genetics) | DNA sequences which signal the termination of transcription. (12 Dec 1998) |
| termini generales | General terms; words that are of general use in descriptive anatomy. (05 Mar 2000) |
| terminist | One of a class of theologians who maintain that God has fixed a certain term for the probation of individual persons, during which period, and no longer, they have the offer to grace. Origin: Cf. F. Terministe. Source: Websters Dictionary (01 Mar 1998) |
| termino-terminal anastomosis | An operation by which the central end of an artery is connected with the peripheral end of the corresponding vein, and the peripheral end of the artery with the central end of the vein. (05 Mar 2000) |
| terminological | Of or pertaining to terminology. Terminolog"ically. Source: Websters Dictionary (01 Mar 1998) |
| terminology | 1. <study> The doctrine of terms; a theory of terms or appellations; a treatise on terms. 2. The terms actually used in any business, art, science, or the like; nomenclature; technical terms; as, the terminology of chemistry. "The barbarous effect produced by a German structure of sentence, and a terminology altogether new." (De Quincey) Origin: L. Terminus term: cf. F. Terminologie. Source: Websters Dictionary (01 Mar 1998) |
| terminus | Origin: L. See Term. 1. Literally, a boundary; a border; a limit. 2. The Roman divinity who presided over boundaries, whose statue was properly a short pillar terminating in the bust of a man, woman, satyr, or the like, but often merely a post or stone stuck in the ground on a boundary line. 3. Hence, any post or stone marking a boundary; a term. See Term. 4. Either end of a railroad line; also, the station house, or the town or city, at that place. Source: Websters Dictionary (01 Mar 1998) |
| termite | Origin: F. See Termes. <zoology> Any one of numerous species of pseudoneoropterous insects belonging to Termes and allied genera; called also white ant. They are very abundant in tropical countries, and are noted for their destructive habits, their large nests, their remarkable social instincts, and their division of labour among the polymorphic individuals of several kinds. Besides the males and females, each nest has ordinary workers, and large-headed individuals called soldiers. Source: Websters Dictionary (01 Mar 1998) |
| termolecular | Denoting three molecules; e.g., a termolecular reaction requires three molecules to come together in order for the reaction to occur. Origin: L. Ter, thrice, + molecular (05 Mar 2000) |
| termone | A type of ectohormone, secreted by some invertebrate organisms, that stimulates gametogenesis. Origin: L. Ter, thrice, threefold, + hormone (05 Mar 2000) |
| termonology | <study> Terminology. Origin: Gr, boundary, end. Source: Websters Dictionary (01 Mar 1998) |
| tern | <ornithology> Any one of numerous species of long-winged aquatic birds, allied to the gulls, and belonging to Sterna and various allied genera. Terns differ from gulls chiefly in their graceful form, in their weaker and more slender bills and feet, and their longer and more pointed wings. The tail is usually forked. most of the species are white with the back and wings pale gray, and often with a dark head. The common European tern (Sterna hirundo) is found also in Asia and America. Among other American species are the arctic tern (S. Paradisaea), the roseate tern (S. Dougalli), the least tern (S. Antillarum), the royal tern (S. Maxima), and the sooty tern (S. Fuliginosa). Hooded tern. See Fairy bird, under Fairy. Marsh tern, any tern of the genus Hydrochelidon. They frequent marshes and rivers and feed largely upon insects. River tern, any tern belonging to Seena or allied genera which frequent rivers. Sea tern, any tern of the genus Thalasseus. Terns of this genus have very long, pointed wings, and chiefly frequent seas and the mouths of large rivers. Origin: Dan. Terne, taerne; akin to Sw. Tarna, Icel. Erna; cf. NL. Sterna. Threefold; triple; consisting of three; ternate. <botany> Tern flowers, a three-masted schooner. Origin: L. Pl. Terni three each, three; akin to tres three. See Three, and cf. Trine. Source: Websters Dictionary (01 Mar 1998) |
| ternary | 1. Proceeding by threes; consisting of three; as, the ternary number was anciently esteemed a symbol of perfection, and held in great veneration. 2. <chemistry> Containing, or consisting of, three different parts, as elements, atoms, groups, or radicals, which are regarded as having different functions or relations in the molecule; thus, sodic hydroxide, NaOH, is a ternary compound. Origin: L. Ternarius, fr. Terni. See Tern. Source: Websters Dictionary (01 Mar 1998) |
| ternary complex | Term used to describe the tripartite combination of, for example, enzyme-cofactor-substrate or enzyme-substrate1-substrate2 for a multisubstrate enzyme, the active form involved in many enzyme-catalyzed reactions. (05 Mar 2000) |