The Collaborative International Dictionary of English v.0.48:

Canonize \Can"on*ize\, v. t. [imp. & p. p. Canonized; p. pr. &
   vb. n. Canonizing.] [F. canoniser or LL. canonizare, fr. L.
   canon.. See Canon.]
   1. (Eccl.) To declare (a deceased person) a saint; to put in
      the catalogue of saints; as, Thomas a Becket was
      canonized.
      [1913 Webster]

   2. To glorify; to exalt to the highest honor.
      [1913 Webster]

            Fame in time to come canonize us.     --Shak.
      [1913 Webster]

   2. To rate as inspired; to include in the canon.[R.]
      [1913 Webster]

WordNet (r) 3.0 (2006):

canonize
    v 1: declare (a dead person) to be a saint; "After he was shown
         to have performed a miracle, the priest was canonized"
         [syn: canonize, canonise, saint]
    2: treat as a sacred person; "He canonizes women" [syn:
       canonize, canonise]

Moby Thesaurus II by Grady Ward, 1.0:

33 Moby Thesaurus words for "canonize":
   aggrandize, apotheose, apotheosize, beatify, bless, cleanse,
   consecrate, crown, dedicate, deify, devote, elevate, ennoble,
   enshrine, enthrone, exalt, frock, glamorize, glorify, hallow,
   immortalize, lionize, magnify, make legendary, ordain, purify,
   raise, saint, sanctify, set apart, set up, throne, uplift