Medical Dictionary


noun poly·mor·phism \ˌpäl-i-ˈmr-ˌfiz-əm\

Medical Definition of POLYMORPHISM

:  the quality or state of existing in or assuming different forms: as a (1) :  existence of a species in several forms independent of the variations of sex (2) :  existence of a gene in several allelic forms (3) :  existence of a molecule (as an enzyme) in several forms in a single species b :  the property of crystallizing in two or more forms with distinct structure
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