Synonyms for Crossbreed (same or very similar meaning)
WordNet sense 1 (breed animals or plants using parents of different races and varieties):
cross, hybridize, interbreed, hybridiseWordNet sense 2 (an organism that is the offspring of genetically dissimilar parents or stock; especially offspring produced by breeding plants or animals of different varieties or breeds or species):
hybridFrom the ODE community, based on WordNetadd/edit