1620s, "uniformity of nature;" by 1856 in biological sense "descent from a common ancestor," from Greek homogeneia "community of origin," from homogene "of the same race or kind" (see homogeneous).
Entries linking to homogeny
homogeneous adj.
1640s, from Medieval Latin homogeneus, from Greek homogenes "of the same kind," from homos "same" (see homo- (1)) + genos "kind, gender, race, stock" (from PIE root *gene- "give birth, beget," with derivatives referring to procreation and familial and tribal groups). Earlier in this sense was homogeneal (c. 1600). Related: Homogeneously; homogeneousness.