The Collaborative International Dictionary of English v.0.48:

evangelize \e*van"gel*ize\ ([-e]*v[a^]n"j[e^]l*[imac]z), v. t.
   [imp. & p. p. evangelized ([-e]*v[a^]n"j[e^]l*[imac]zd); p.
   pr. & vb. n. evangelizing
   ([-e]*v[a^]n"j[e^]l*[imac]*z[i^]ng)]. [F. ['e]vang['e]lisre,
   LL. evangelizare, fr. Gr. e'yaggeli`zesqai.]
   1. To instruct in the gospel; to preach the gospel to; to
      convert to Christianity; as, to evangelize the world.
      [1913 Webster]

            His apostles whom he sends
            To evangelize the nations.            --Milton.
      [1913 Webster]

   2. Hence: [metaphorical] To preach and attempt to convert
      (people) to one's firmly held belief.
      [PJC]