1. Existence in two shapes or forms; denoting a difference of crystalline form exhibited by the same substance, or a difference in form or outward appearance between individuals of the same species ( e.g., sexual d.). 2. The occurrence in plants of two distinct forms of leaves or other parts in the same individual plant. [G. di-, two, + morphe, shape]
- sexual d. the somatic differences within species between male and female individuals that arise as a consequence of sexual maturation; inclusive of, but not restricted to, the secondary sexual characters.
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a ) (1) the existence of two different forms (as of color or size) of a species esp. in the same population (2) the existence of an organ in two different forms
b) crystallization of a chemical compound in two different forms
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di·mor·phism (di-morґfiz-əm) [di- + morph- + -ism] the property of having or existing in two forms, as fungi that can grow as molds or yeasts.Medical dictionary. 2011.