noun, plural ho·mol·o·gies.
the state of being homologous; homologous relation or correspondence.
- a fundamental similarity based on common descent.
- a structural similarity of two segments of one animal based on a common developmental origin.
Chemistry. the similarity of organic compounds of a series in which each member differs from its adjacent compounds by a fixed increment, as by CH2.
Mathematics. a classification of figures according to certain topological properties.
Origin of homology
< Greek homología
agreement, equivalent to homólog(os
+ -ia -y3
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Related Words for homologiesparity
Examples from the Web for homologies
Historical Examples of homologies
British Dictionary definitions for homologies
noun plural -gies
the condition of being homologous
chem the similarities in chemical behaviour shown by members of a homologous series
zoology the measurable likenesses between animals, as used in grouping them according to the theory of cladistics
Word Origin for homology
C17: from Greek homologia agreement, from homologos agreeing; see homologate
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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A homologous relationship or correspondence.
The relation of the chemical elements of a periodic family or group.
The relation of the organic compounds forming a homologous series.
A topological classification of configurations into distinct types that imposes an algebraic structure or hierarchy on families of geometric figures.
The American Heritage® Science Dictionary
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