I. transitive verb Date: 1904 to cross (a first-generation hybrid) with one of the parental types, II. noun Date: 1918 a mating that involves ~ing
BACKCROSS
Meaning of BACKCROSS in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012