Source : Webster's Revised Unabridged Dictionary (1913)

Synthesize \Syn"the*size\, v. t.
   1. To combine by synthesis; to unite.

   2. To produce by synthesis; as, to synthesize albumin.

Source : WordNet®

synthesize
     v 1: combine so as to form a more complex, product; "his operas
          synthesize music and drama in perfect harmony" [syn: {synthesise}]
          [ant: {analyze}]
     2: combine and form a synthesis