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heterogeneous (adj.)

"diverse in kind or nature," 1620s, from Medieval Latin heterogeneus, from Greek heterogenes, from heteros "different" (see hetero-) + genos "kind, gender, race stock" (from PIE root *gene- "give birth, beget," with derivatives referring to procreation and familial and tribal groups). Earlier in same sense was heterogeneal (c. 1600). Related: Heterogeneously; heterogeneousness.