The Collaborative International Dictionary of English v.0.48:

Grecize \Gre"cize\, Grecianize \Gre"cian*ize\, v. i.
   To conform to the Greek custom, especially in speech.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Grecize \Gre"cize\, v. t. [imp. & p. p. Grecized; p. pr. & vb.
   n. Grecizing.] [Cf. F. gr['e]ciser.]
   1. To render Grecian; also, to cause (a word or phrase in
      another language) to take a Greek form; as, the name is
      Grecized. --T. Warton.
      [1913 Webster]

   2. To translate into Greek. Grecize