[vahys-mahn-iz-uh m]

noun Biology.

the theories of heredity as expounded by Weismann, especially the theory that all inheritable characteristics are carried in the germ plasm, and that acquired characteristics cannot be inherited.

Origin of Weismannism

First recorded in 1890–95; Weismann + -ism
Related formsWeis·mann·i·an, adjective, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for weismannism



the doctrine of the continuity of the germ plasm. This theory of heredity states that all inheritable characteristics are transmitted by the reproductive cells and that characteristics acquired during the lifetime of the organism are not inherited

Word Origin for Weismannism

C19: named after August Weismann (1834–1914), German biologist
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