The Collaborative International Dictionary of English v.0.48:

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.
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            And fertilize the field that each pretends to gain.
                                                  --Byron.
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   2. To fecundate; as, to fertilize flower. --A. R. Wallace.
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