The Collaborative International Dictionary of English v.0.48:

Latinize \Lat"in*ize\, v. t. [imp. & p. p. Latinized; p. pr. &
   vb. n. Latinizing.] [L. latinizare: cf. F. latiniser.]
   1. To give Latin terminations or forms to, as to foreign
      words, in writing Latin.
      [1913 Webster]

   2. To bring under the power or influence of the Romans or
      Latins; to affect with the usages of the Latins,
      especially in speech. "Latinized races." --Lowell.
      [1913 Webster]

   3. To make like the Roman Catholic Church or diffuse its
      ideas in; as, to Latinize the Church of England.
      [1913 Webster]

   4. to write in the latin alphabet.

   Syn: Romanize.
        [WordNet 1.5]

The Collaborative International Dictionary of English v.0.48:

Latinize \Lat"in*ize\, v. i.
   To use words or phrases borrowed from the Latin. --Dryden.
   [1913 Webster]

   2. To come under the influence of the Romans, or of the Roman
      Catholic Church.
      [1913 Webster]

WordNet (r) 3.0 (2006):

Latinize
    v 1: write in the Latin alphabet; "many shops in Japan now carry
         neon signs with Romanized names" [syn: Romanize,
         Romanise, Latinize, Latinise]
    2: translate into Latin
    3: cause to adopt Catholicism [syn: catholicize,
       catholicise, latinize, latinise]