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Noun: dimorphism  dI'mor,fi-zum
  1. (biology) the existence of two forms of individual within the same animal species (independent of sex differences)
    "Color dimorphism in butterflies helps them adapt to different environments"
     
  2. (chemistry) the property of certain substances that enables them to exist in two distinct crystalline forms
    "The dimorphism of calcium carbonate results in the minerals calcite and aragonite"

Derived forms: dimorphisms

Type of: pleomorphism, polymorphism

Encyclopedia: Dimorphism