- Karl ( karl ). 1868–1943, Austrian immunologist, who discovered (1900) human blood groups and introduced the ABO classification system. He also discovered (1940) the Rhesus (Rh) factor in blood and researched into poliomyelitis. Nobel prize for physiology or medicine (1930)
WordReference Random House Unabridged Dictionary of American English © 2026
Land•stei•ner
(land′stī′nər; Ger. länt′shtī′nər),USA pronunciation n.
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Landsteiner /German: ˈlantˌʃtaɪnər/ n