The Collaborative International Dictionary of English v.0.48:

Fecundate \Fec"un*date\, v. t. [imp. & p. p. Fecundated; p.
   pr. & vb. n. Fecundating.] [L. fecundare, fr. fecundus. See
   Fecund.]
   1. To make fruitful or prolific. --W. Montagu.
      [1913 Webster]

   2. (Biol.) To render fruitful or prolific; to impregnate; as,
      in flowers the pollen fecundates the ovum through the
      stigma.
      [1913 Webster]