HOMOLOGOUS • DICCIONARIO INGLES.COM • Definition of Homologous

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adjective

Homologous adj. Having the same relative position, proportion, value, or structure. Especially:

(a)

(Geom.) Corresponding in relative position and proportion. "In similar polygons, the corresponding sides, angles, diagonals, etc., are homologous."

(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.

Homologous stimulus. (Physiol.) See under Stimulus.

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Etymology of 'Homologous'

Collaborative International Dictionary of English 0.48

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"Homologous" Quotes from Famous Books

... heads, long necks, narrow chests, and long flanks; but these blemishes were removed by judicious crosses and selection. The long smooth wool was also correlated with smooth horns; and as horns and hair are homologous structures, we can understand the meaning of this correlation. If the Mauchamp and ancon breeds had originated a century or two ago, we should have had no record of their birth; and many a naturalist would no doubt have insisted, especially in the case of ...

— The Variation of Animals and Plants under Domestication - Volume I • Charles Darwin

... incomplete to the complex and perfect. 2. Ascending metamorphoses, including those changes of form manifested in the same adult organism by the several parts of which it consists—those parts being typically identical or homologous, such as the parts of the flower, or, in animals, the vertebrae, &c. 3. Collateral metamorphoses, comprising those permutations of form and function manifested in homologous organs in the different groups of organisms, classes, ...

— Vegetable Teratology - An Account of the Principal Deviations from the Usual Construction of Plants • Maxwell T. Masters

Words linked to "Homologous" : homology, biology, homologic, homological, biological science