Meaning & use
dimorphism
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The existence of two distinct forms within a species, especially differences in appearance between males and females.
See it in a sentence
Sexual dimorphism in peacocks is obvious in their strikingly different plumage.
Researchers studied dimorphism in beak size between male and female finches.
A note on using this word
Almost always appears in the phrase "sexual dimorphism" in biology and zoology.
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