noun (plural -gies) Date: circa 1656 1. a similarity often attributable to common origin 2. a. likeness in structure between parts of different organisms (as the wing of a bat and the human arm) due to evolutionary differentiation from a corresponding part in a common ancestor — compare analogy b. correspondence in structure between a series of parts (as vertebrae) in the same individual 3. similarity of nucleotide or amino acid sequence (as in nucleic acids or proteins) 4. a branch of the theory of topology concerned with partitioning space into geometric components (as points, lines, and triangles) and with the study of the number and interrelationships of these components especially by the use of group theory — called also homology theory — compare cohomology

New Collegiate Dictionary. 2001.

Look at other dictionaries:

  • Homology — Ho*mol o*gy, n. [Gr. ? agreement. See {Homologous}.] 1. The quality of being homologous; correspondence; relation; as, the homologyof similar polygons. [1913 Webster] 2. (Biol.) Correspondence or relation in type of structure in contradistinction …   The Collaborative International Dictionary of English

  • Homology — may refer to:* Homology (anthropology), analogy between human beliefs, practices or artifacts due to genetic or historical connections. * Homology (biology): similar structures due to shared ancestry. * Homology (chemistry): a compound of a… …   Wikipedia

  • homology — homology. См. гомология. (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.

  • homology — index analogy, relation (connection) Burton s Legal Thesaurus. William C. Burton. 2006 …   Law dictionary

  • homology —   , homology.   Features having a common origin but not necessarily the same function, e.g. cycad leaves, cataphylls, and sporophylls.   See also apomorphy, autoapomorphy, homoplasy, plesiomorphy, symplesiomorphy, synapomorphy …   Expanded glossary of Cycad terms

  • homology — [hō mäl′ə jē, həmäl′ə jē] n. pl. homologies [LL homologia < Gr: see HOMO & LOGY] 1. the quality or state of being homologous 2. a homologous correspondence or relationship, as of animal organs, chemical compounds, etc …   English World dictionary

  • homology — /heuh mol euh jee, hoh /, n., pl. homologies. 1. the state of being homologous; homologous relation or correspondence. 2. Biol. a. a fundamental similarity based on common descent. b. a structural similarity of two segments of one animal based on …   Universalium

  • homology — homologija statusas T sritis augalininkystė apibrėžtis Darinių panašumas dėl artimos kilmės. atitikmenys: angl. homology rus. гомология …   Žemės ūkio augalų selekcijos ir sėklininkystės terminų žodynas

  • homology — 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… …   English terms dictionary

  • homology — similarity of characters due to close ancestry, a common evolutionary origin, e.g. pectoral fins are homologous with human arms but pelvic fins are not homologous with legs (and so are perhaps better termed ventral fins). In contrast to homoplasy …   Dictionary of ichthyology

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