verb, -lized, -liz⋅ing.| 1. | to cause the cross-fertilization of. |
| 2. | to undergo cross-fertilization. |

| cross-fertilization
The fertilization that occurs when the nucleus of a male sex cell from one individual joins with the nucleus of a female sex cell from another individual. In plants, cross-pollination is an example of cross-fertilization. Also called allogamy. Compare self-fertilization. cross-fertilize verb |