- the custom, often inviolable, of marrying only outside one's own clan, tribe, etc.
- Bot. cross-pollination
Origin of exogamyexo- + -gamy
- Anthropology The custom of marrying outside the tribe, family, clan, or other social unit.
- Biology The fusion of gametes from individuals that are not closely related, as in outbreeding.
- (marriage): endogamy
From exo- + -gamy