n., vt. To transfer pollen from the anthers of the flowers of one plant to the stigma of the flower of another plant. The mating of a hybrid with a third parent; also an offtype plant resulting from pollen of a different sort contaminating a field of usually self-pollinated plants.

Cross-pollination, usually by natural means, with plants differing in genetic constitution.

a breeding made between unrelated family bloodlines.

To breed a cat with another cat of a different breed in order to strengthen the stock, refine and build features, and increase color varieties.