Homologous Ho*mol"o*gous, a. [Gr. ? assenting, agreeing; ? the same + ? speech, discourse, proportion, ? to say, speak.] Having the same relative position, proportion, value, or structure. Especially: (a) (Geom.) Corresponding in relative position and proportion. [1913 Webster]

In similar polygons, the corresponding sides, angles, diagonals, etc., are homologous. --Davies & Peck (Math. Dict.). (b) (Alg.) Having the same relative proportion or value, as the two antecedents or the two consequents of a proportion. (c) (Chem.) Characterized by homology; belonging to the same type or series; corresponding in composition and properties. See {Homology}, 3. (d) (Biol.) Being of the same typical structure; having like relations to a fundamental type to structure; as, those bones in the hand of man and the fore foot of a horse are homologous that correspond in their structural relations, that is, in their relations to the type structure of the fore limb in vertebrates. [1913 Webster]

{Homologous stimulus}. (Physiol.) See under {Stimulus}. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

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  • homologous — [hō mäl′ə gəs] adj. [Gr homologos, agreeing < homos, SAME + legein, say: see LOGIC] 1. corresponding in structure, position, character, etc.: opposed to HETEROLOGOUS 2. Biol. corresponding in basic type of structure and deriving from a common… …   English World dictionary

  • homologous — homologous. См. гомологичный. (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.

  • homologous — index analogous, coequal, coextensive, cognate, comparable (capable of comparison), equal Burton s Legal Thesaurus. William C. Burton. 2006 …   Law dictionary

  • homologous — 1650s, from Gk. homologos agreeing, of one mind, from homos same (see HOMO (Cf. homo ) (1)) + logos relation, reasoning, computation, related to legein reckon, select, speak (see LECTURE (Cf. lecture) (n.)) …   Etymology dictionary

  • homologous — ► ADJECTIVE 1) having the same relation, relative position, or structure. 2) Biology (of organs) similar in position, structure, and evolutionary origin. DERIVATIVES homologize (also homologise) verb homology noun. ORIGIN Greek homologos agreeing …   English terms dictionary

  • homologous — /heuh mol euh geuhs, hoh /, adj. 1. having the same or a similar relation; corresponding, as in relative position or structure. 2. corresponding in structure and in origin, but not necessarily in function: The wing of a bird and the foreleg of a… …   Universalium

  • homologous — adjective Showing a degree of correspondence or similarity. : Corresponding to a similar structure in another life form with a common evolutionary origin. :, : Lobules, homologous in structure, recur again only in the Gondwanalandic families… …   Wiktionary

  • Homologous — The relationship between two chromosomes that are paired and so are homologs of each other. * * * Corresponding or alike in certain critical attributes. 1. In biology or zoology, denoting organs or parts corresponding in evolutionary origin and… …   Medical dictionary

  • homologous — adjective Etymology: Greek homologos agreeing, from hom + legein to say more at legend Date: 1660 1. a. having the same relative position, value, or structure: as (1) exhibiting biological homology (2) having the same or allelic genes with… …   New Collegiate Dictionary

  • homologous — (1) Derived from the tissues or DNA of a member of the same species. cf heterologous, autologous, homologous recombination. (2) Of genes, similar in sequence, cf. analogous …   Dictionary of molecular biology

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