(In animal and plant breeding) the initial cross between two different breeds of animal or varieties or species of plant; an instance of this; an animal or plant resulting from such a cross.
Origin
Late 18th century; earliest use found in Annals of Agriculture.
Definition of first cross in US English:
first cross
noun
(In animal and plant breeding) the initial cross between two different breeds of animal or varieties or species of plant; an instance of this; an animal or plant resulting from such a cross.
Origin
Late 18th century; earliest use found in Annals of Agriculture.