endogamy
/ɛnˈdɒɡəmi/
noun 2
Definitions
noun
1
The practice of marrying or requiring to marry within one's own ethnic, religious, or social group.
Far from suggesting a demoralized culture, endogamy here seemed the mark of a buoyantly confident group, settled in their skin and not needing outsiders.
2
The fusion of two related gametes.
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