The Collaborative International Dictionary
Fertilizing
Fertilize \Fer"ti*lize\, v. t. [imp. & p. p. Fertilized; p. pr. & vb. n. Fertilizing.] [Cf. F. fertiliser.]
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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. To fecundate; as, to fertilize flower.
--A. R. Wallace.
Wiktionary
fertilizing
vb. (present participle of fertilize English)