- dimorphism - (chemistry) the property of certain substances that enables them to exist in two distinct crystalline forms
--1 is a kind of polymorphism, pleomorphism
- dimorphism - (biology) the existence of two forms of individual within the same animal species (independent of sex differences)
--2 is a kind of polymorphism
- dimorphism - (biology) the existence of two forms of individual within the same animal species (independent of sex differences)