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homologous |
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homologous, homological, homologic 1. Chem (of a series of organic compounds) having similar characteristics and structure but differing by a number of CH2 groups 2. Med a. (of two or more tissues) identical in structure b. (of a vaccine) prepared from the infecting microorganism 3. Biology (of organs and parts) having the same evolutionary origin but different functions 4. Maths (of elements) playing a similar role in distinct figures or functions homologous [hə′mäl·ə·gəs] (biology) Pertaining to a structural relation between parts of different organisms due to evolutionary development from the same or a corresponding part, such as the wing of a bird and the pectoral fin of a fish. (geology) Referring to strata, in separated areas, that are correlatable (contemporaneous) and are of the same general character or facies, or occupy analogous structural positions along the strike. Pertaining to faults, in separated areas, that have the same relative position or structure. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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The several parts of the body which are homologous, and which, at an early embryonic period, are alike, seem liable to vary in an allied manner: we see this in the right and left sides of the body varying in the same manner; in the front and hind legs, and even in the jaws and limbs, varying together, for the lower jaw is believed to be homologous with the limbs. |
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