Weismannian adjective 1noun 1forms 1 adjective1 •Of or relating to August Weismann (1834–1914), German evolutionary biologist.Lamarckian, Darwinian, Weismannian, and Mendelian concepts and their transferability onto the “biology of the Jews” were hotly debated. — 2016 noun1 •An adherent of the views of August Weismann (1834–1914), German evolutionary biologist. formsWeismannians