Meaning of homology

ho•mol•o•gy

Pronunciation: (hu-mol'u-jē, hō-), [key]
— pl. -gies.
  1. the state of being homologous; homologous relation or correspondence.
    1. a fundamental similarity based on common descent.
    2. a structural similarity of two segments of one animal based on a common developmental origin.
  2. the similarity of organic compounds of a series in which each member differs from its adjacent compounds by a fixed increment, as by CH.
  3. a classification of figures according to certain topological properties.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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