Source : Webster's Revised Unabridged Dictionary (1913)

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

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.

         And earth was metamorphosed into man.    --Dryden.

Source : WordNet®

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: {transfigure}, {transmogrify}]
     2: change in outward structure or looks; "He transformed into a
        monster"; "The salesman metamorphosed into an ugly beetle"
        [syn: {transform}, {transmute}]