The Collaborative International Dictionary of English v.0.48:

Coronate \Cor"o*nate\ (k?r"?-n?t), Coronated \Cor"o*na`ted\
   (-n?`t?ed), a. [L. coronatus, p. p. of coronare to crown, fr.
   corona. See Crown.]
   1. Having or wearing a crown.
      [1913 Webster]

   2. (Zool.)
      (a) Having the coronal feathers lengthened or otherwise
          distinguished; -- said of birds.
      (b) Girt about the spire with a row of tubercles or
          spines; -- said of spiral shells.
          [1913 Webster]

   3. (Biol.) Having a crest or a crownlike appendage.
      [1913 Webster]

WordNet (r) 3.0 (2006):

coronate
    v 1: invest with regal power; enthrone; "The prince was crowned
         in Westminster Abbey" [syn: crown, coronate]