The Collaborative International Dictionary of English v.0.48:

Verbalize \Ver"bal*ize\, v. t. [imp. & p. p. Verbalized; p.
   pr. & vb. n. Verbalizing.] [Cf. F. verbaliser.]
   1. To convert into a verb; to verbify.
      [1913 Webster]

   2. To express in words.
      [PJC]