bivalent

BIVALÉNT, -Ă, bivalenţi, -te, adj. (Despre un element sau un radical chimic) Care are valenţa doi. – Din fr. bivalent.
Trimis de paula, 21.06.2002. Sursa: DEX '98

BIVALÉNT adj. (chim.) divalent.
Trimis de siveco, 05.08.2004. Sursa: Sinonime

bivalént adj. m., pl. bivalénţi; f. sg. bivaléntă, pl. bivalénte
Trimis de siveco, 10.08.2004. Sursa: Dicţionar ortografic

BIVALÉN//T bivalenttă (bivalentţi, bivalentte) (despre elemente sau radicali chimici) Care are valenţa doi; cu valenţa doi. /<fr. bivallent
Trimis de siveco, 22.08.2004. Sursa: NODEX

BIVALÉNT, -Ă adj. 1. (Despre elemente chimice) Cu două valenţe. 2. Care are două valori. [< fr. bivalent].
Trimis de LauraGellner, 19.11.2004. Sursa: DN

BIVALÉNT, -Ă adj. 1. (despre elemente chimice) care are valenţa 2; divalent. 2. cu cromozomi omologi asociaţi în perechi în profaza meiotică. 3. (fig.) care are două valori. (< fr. bivalent)
Trimis de raduborza, 15.09.2007. Sursa: MDN

Dicționar Român. 2013.

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  • bivalent — bivalent, ente [ bivalɑ̃, ɑ̃t ] adj. • 1866; de bi et valent 1 ♦ Chim. Qui a la valence 2. Molécule bivalente (on dit aussidivalent, ente). 2 ♦ Log. Logique bivalente, qui ne considère que deux valeurs de vérité, le vrai et le faux. 3 ♦ Fam. Qui… …   Encyclopédie Universelle

  • Bivalent — may refer to: *Bivalent (chemistry), a molecule formed from two or more atoms bound together as a single unitmolecule *Bivalent (engine), an engine that can use petroleum and renewable energy *Bivalent (genetics), a pair of homologous chromosomes …   Wikipedia

  • Bivalent — ist eine aus Chromosomen gebildete Struktur während der Meiose, siehe Bivalent (Meiose) Siehe auch: Bivalenz Diese Seite ist eine Begriffsklärung zur Unterscheidung mehrerer mit demselben Wort bezeichneter Begri …   Deutsch Wikipedia

  • Bivalent — Biv a*lent, a. [L. bis twice + valens, p. pr. See {Valence}.] (Chem.) Equivalent in combining or displacing power to two atoms of hydrogen; dyad. [1913 Webster] …   The Collaborative International Dictionary of English

  • bivalent — bivalent. См. бивалент. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • Bivalént — (neulat.), zweiwertig …   Kleines Konversations-Lexikon

  • bivalent — 1864, of chemicals, 1899, of chromosomes, from BI (Cf. bi ) + valent, from L. valentem, prp. of valere be worth (see VALIANT (Cf. valiant)) …   Etymology dictionary

  • bivalent — [bi valənt, biv′ələnt, bī bvā′lənt] adj. 1. Chem. DIVALENT: see VALENT 2. Biol. double: said of a chromosome formed by two equivalent chromosomes that lie close together or appear to join completely during meiosis n. a double chromosome; dyad …   English World dictionary

  • bivalent — 1. Having a combining power (valence) of 2. SYN: divalent. 2. In cytology, a structure consisting of two paired homologous chromosomes, each split into two sister chromatids, as seen during the pachytene stage of prophase in meiosis. SEE ALSO …   Medical dictionary

  • Bivalent — Chromosomes homologues Des chromosomes homologues (une paire de chromosomes homologues forment un bivalent) sont des chromosomes appartenant à la même paire, de même taille possédant les mêmes gènes mais pas obligatoirement les mêmes allèles.… …   Wikipédia en Français

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