v. t. & i. [ imp. & p. p. Intercrossed p. pr. & vb. n. Intercrossing. ] [ 1913 Webster ]

1. To cross each other, as lines. [ 1913 Webster ]

2. (Biol.) To fertilize by the impregnation of one species or variety by another; to impregnate by a different species or variety. [ 1913 Webster ]

n. The process or result of cross fertilization between different kinds of animals, or different varieties of plants. [ 1913 Webster ]

We have reason to believe that occasional intercrosses take place with all animals and plants. Darwin. [ 1913 Webster ]