cacogenesis

noun

caco·​gen·​e·​sis

ˌkakəˈjenəsə̇s

1

: inability to produce hybrids that are both viable and fertile

2

: racial deterioration especially when due to the retention of inferior breeding stock

Word History

Etymology

New Latin, from cac- + genesis

First Known Use

1922, in the meaning defined at sense 2

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