[di.mor.phism] n (1832): the condition or property of being dimorphic or dimorphous: as a: the existence of two different forms (as of color or size) of a species esp. in the same population "sexual ~" b: the existence of an organ (as the leaves of a plant) in two different forms
DIMORPHISM
Meaning of DIMORPHISM in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012