convergence
1) evolution of similar characters in unrelated taxonomic groups, in cladistics a synonym of parallelism, e.g. fin-like structures in fishes and whales
2) the meeting of ocean currents or water masses with different physical properties (temperature, salinity, density) with the result that colder, saltier or denser water sinks, or the line or area where convergence occurs
3) deep cell movement toward the dorsal side of the embryo during the gastrula and early segmentation periods

Dictionary of ichthyology. 2009.

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  • convergence — [ kɔ̃vɛrʒɑ̃s ] n. f. • 1671; de convergent 1 ♦ Le fait de converger. La convergence de deux lignes. Convergence d un système optique, d une lentille. Rapport de convergence. ⇒ grandissement. Météor. Convergence de deux masses d air. Géol. Zone de …   Encyclopédie Universelle

  • Convergence — Con*ver gence, Convergency Con*ver gen*cy, n. [Cf. F. convergence.] 1. The condition or quality of converging; tendency to one point; the occurrence of two or more things coming together. [1913 Webster] 2. (Math.) the approach of an infinite… …   The Collaborative International Dictionary of English

  • Convergence — Allgemeine Informationen Genre(s) Rock, Metal, Alternative Metal, Nu Metal Gründung 2001 Website …   Deutsch Wikipedia

  • convergence — CONVERGENCE. substant, fémin. Terme de Géométrie. Position réciproque de deux lignes qui vont en s approchant.Convergence. En Dioptrique, c est la disposition des rayons d un corps lumineux, qui vont en s approchant, jusqu à ce qu ils se… …   Dictionnaire de l'Académie Française 1798

  • convergence — convergence. См. конвергенция. (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.

  • convergence — index adjoiner, caucus, center (central position), centralization, coalescence, coalition, collection (accumulation) …   Law dictionary

  • convergence — thesis …   Dictionary of sociology

  • convergence — (n.) 1713, from CONVERGE (Cf. converge) + ENCE (Cf. ence). Related: Convergent. Convergent evolution was in use among biologists by 1890 …   Etymology dictionary

  • convergence — n. pl. convergencies [kən vʉr′jəns] n. [< CONVERGENT] 1. the act, fact, or condition of converging 2. the point at which things converge 3. Biol. the development of similarities in unrelated organisms living in similar environments: Also… …   English World dictionary

  • Convergence — Contents 1 Science 1.1 Mathematics 1.2 Natural sciences …   Wikipedia

  • Convergence — Cette page d’homonymie répertorie les différents sujets et articles partageant un même nom. Sur les autres projets Wikimedia : « Convergence », sur le Wiktionnaire (dictionnaire universel) Le terme de convergence est utilisé dans… …   Wikipédia en Français

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