[f. the name Weismann (see below) + -ISM.] The theory of evolution and heredity propounded by the German biologist August Weismann, esp. in regard to the continuity of the germ-plasm and the non-transmission of acquired characteristics.
1893. Romanes (title), An examination of Weismannism.
1894. H. Spencer, in Contemp. Rev., Oct., 592 (title), Weismannism once more.
