Definitions for "BACKCROSSING"
(1) The mating of a hybrid to a purebred of a parent breed or line. (2) The mating of an individual (purebred or hybrid) to any other individual (purebred or hybrid) with which it has one or more ancestral breeds or lines in common.
mating of an organism with a parent.
In plant breeding, backcrossing is a crossing of a hybrid with one of its parents.