fertilize
US /ˈfɝː.t̬əl.aɪz/
UK /ˈfɝː.t̬əl.aɪz/

1.
2.
(of a male animal or plant) to unite with (a female gamete or flower) to initiate the development of a new individual
:
•
The male bee helps to fertilize the flower.
•
In vitro fertilization is a process used to fertilize an egg outside the body.