The Collaborative International Dictionary of English v.0.48:

Metamorphose \Met`a*mor"phose\, n. [Cf. F. m['e]tamorphose. See
   Metamorphosis.]
   Same as Metamorphosis.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Metamorphose \Met`a*mor"phose\, v. t. [imp. & p. p.
   Metamorphosed; p. pr. & vb. n. Metamorphosing.] [Cf. F.
   m['e]tamorphoser.]
   To change into a different form; to transform; to transmute.
   [1913 Webster]

         And earth was metamorphosed into man.    --Dryden.
   [1913 Webster]

WordNet (r) 3.0 (2006):

metamorphose
    v 1: change completely the nature or appearance of; "In Kafka's
         story, a person metamorphoses into a bug"; "The treatment
         and diet transfigured her into a beautiful young woman";
         "Jesus was transfigured after his resurrection" [syn:
         metamorphose, transfigure, transmogrify]
    2: change in outward structure or looks; "He transformed into a
       monster"; "The salesman metamorphosed into an ugly beetle"
       [syn: transform, transmute, metamorphose]