Pronunciation: (hu-mol'u-jē, hō-), [key]
1. the state of being homologous; homologous relation or correspondence.
a. a fundamental similarity based on common descent.
b. a structural similarity of two segments of one animal based on a common developmental origin.
3. Chem.the similarity of organic compounds of a series in which each member differs from its adjacent compounds by a fixed increment, as by CH2.
4. Math.a classification of figures according to certain topological properties.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.