Pronunciation: (fûr'tl-īz"), [key]
—v.t., -lized, -liz•ing.
a. to render (the female gamete) capable of development by uniting it with the male gamete.
b. to fecundate or impregnate (an animal or plant).
2. to make fertile; enrich: to fertilize farmland.
3. to make productive. Also, esp. Brit.,fer'ti•lise".
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.