Fertilize \Fer"ti*lize\, v. t. [imp. & p. p. Fertilized; p. pr. & vb. n. Fertilizing.]

[Cf. F. fertiliser.]

1. To make fertile or enrich; to supply with nourishment for plants; to make fruitful or productive; as, to fertilize land, soil, ground, and meadows.

And fertilize the field that each pretends to gain. --Byron.

2. To fecundate; as, to fertilize flower. --A. R. Wallace.

Source: Webster's Revised Unabridged Dictionary (1913)