"homology" Definition

Definitions for the word "homology" from multiple English dictionaries.

1. n.
The quality of being homologous; correspondence; relation; as, the homologyof similar polygons.
Source: The 1913 Webster Unabridged Dictionary, 1913
2. n.
Correspondence or relation in type of structure in contradistinction to similarity of function; as, the relation in structure between the leg and arm of a man; or that between the arm of a man, the fore leg of a horse, the wing of a bird, and the fin of a fish, all these organs being modifications of one type of structure.
Source: The 1913 Webster Unabridged Dictionary, 1913
3. n.
The correspondence or resemblance of substances belonging to the same type or series; a similarity of composition varying by a small, regular difference, and usually attended by a regular variation in physical properties; as, there is an homology between methane, CH4, ethane, C2H6, propane, C3H8, etc., all members of the paraffin series. In an extended sense, the term is applied to the relation between chemical elements of the same group; as, chlorine, bromine, and iodine are said to be in homology with each other. Cf. Heterology.
Source: The 1913 Webster Unabridged Dictionary, 1913
4. n.
Homologous state or relation; correspondence.
Source: Oxford English Dictionary, 1884

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This page provides a list of definitions and meanings for "homology" from various historical English dictionaries. By displaying multiple definitions, you can compare and contrast different meanings and nuances of a word, phrase, or slang. You can also see the changes in meaning of "homology" over time by viewing the definitions from different dictionaries published at different times in history. The page also includes other information to help users expand their vocabulary and understand the context of the word.

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