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1. Having or occurring in several distinct forms
   "man is both polymorphic and polytypic";
   - polymorphous
    
2. (chemistry) relating to the crystallization of a compound in two or more different forms
   "polymorphic crystallization";
   - polymorphous
    
3. (biology) relating to the occurrence of more than one kind of individual (independent of sexual differences) in an interbreeding population
   "a polymorphic species";
   - polymorphous

See also: multiform

Encyclopedia: Polymorphic