"interbreeding" in the noun sense
1. hybridization, hybridisation, crossbreeding, crossing, cross, interbreeding, hybridizing
genetics) the act of mixing different species or varieties of animals or plants and thus to produce hybrids
2. miscegenation, crossbreeding, interbreeding
reproduction by parents of different races (especially by white and non-white persons)
"interbreeding" in the verb sense
1. crossbreed, cross, hybridize, hybridise, interbreed
breed animals or plants using parents of different races and varieties
"cross a horse and a donkey"
"Mendel tried crossbreeding"
"these species do not interbreed"
Source: WordNet® (An amazing lexical database of English)
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