- to fertilize or be fertilized by pollen with different genes
- to fertilize or be fertilized by a male gamete from another animal, as in the mutual exchange of sperm between individuals in a hermaphroditic species
- to fuse a male and female gamete derived from different varieties or species
intr. & tr.v.cross-fer·til·ized, cross-fer·til·iz·ing, cross-fer·til·iz·es
(third-person singular simple present cross-fertilizes, present participle cross-fertilizing, simple past and past participle cross-fertilized)
- To undergo (cause to undergo) cross-fertilization.