The Collaborative International Dictionary of English v.0.48:

Christianize \Chris"tian*ize\, v. t. [imp. & p. p.
   Christianized; p. pr. & vb. n. Christianizing.] [Cf. F.
   christianiser, L. christianizare, fr. Gr. ?.]
   1. To make Christian; to convert to Christianity; as, to
      Christianize pagans.
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   2. To imbue with or adapt to Christian principles.
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            Christianized philosophers.           --I. Taylor.
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