Breeding two animals together that have no common ancestry. Compare to Inbreeding and Linebreeding. For more information: Inbreeding vs. Linebreeding.
mating two individuals of the same breed that are sufficiently unrelated that the IC of the progeny is lower than the average of the parents.
The breeding of one registered breed to another, resulting in a registerable hybrid breed. Also refers to the breeds allowable in the background of a registered hybrid breed.