The Collaborative International Dictionary of English v.0.48:

Proselytize \Pros"e*ly*tize\, v. t. [imp. & p. p.
   proselytized; p. pr. & vb. n. Proselytizing.]
   To convert to some religion, system, opinion, or the like; to
   bring, or cause to come, over; to proselyte.
   [1913 Webster]

         One of those whom they endeavor to proselytize.
                                                  --Burke.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Proselytize \Pros"e*ly*tize\, v. i.
   To make converts or proselytes.
   [1913 Webster]

WordNet (r) 3.0 (2006):

proselytize
    v 1: convert to another faith or religion [syn: proselytize,
         proselytise]