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Webster 1913 Edition
Polymorphism
Polˊy-mor′phism
,Noun.
2.
(Biol.)
(a)
The capability of assuming different forms; the capability of widely varying in form.
(b)
Existence in many forms; the coexistence, in the same locality, of two or more distinct forms independent of sex, not connected by intermediate gradations, but produced from common parents.