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Szi·lard(zĭl′ərd, zə-lärd′), Leo 1898-1964.
Hungarian-born American physicist and biologist. A member of the Manhattan Project, he helped develop the first atomic bomb. Szilard was later opposed to the construction and use of all nuclear weapons and devoted himself to studying molecular biology.
(Biography) Leo. 1898–1964, US physicist, born in Hungary, who originated the idea of a self-sustaining nuclear chain reaction (1934). He worked on the atomic bomb during World War II but later pressed for the international control of nuclear weapons
Leo, 1898–1964, U.S. physicist, born in Hungary.