Austrian physician; born at Schiltern, Lower Austria, Feb. 8, 1845. Educated at the Josefs-Akademie and the University of Vienna (M.D. 1869), he joined the army as surgeon and remained in service until 1878, when he resigned and became privat-docent at the University of Vienna. In 1885 he was appointed assistant professor and in 1894 professor of pathological anatomy. In 1892 he was elected member of the Imperial Academy of Sciences at Vienna.
Weichselbaum has contributed more than a hundred essays to the professional journals, and is the author of "Grundriss der Pathologischen Histologie," Leipsic and Vienna, 1892.