Definition that contains atomic bomb
- hiroshima a port city on the southwestern coast of Honshu in Japan; on August 6, 1945 Hiroshima was almost completely destroyed by the first atomic bomb dropped on a populated area
- truman elected vice president in Roosevelt's 4th term; became 33rd President of the United States on Roosevelt's death in 1945 and was elected President in 1948; authorized the use of atomic bombs against Japan (1884-1972)
- nagasaki a city in southern Japan on Kyushu; a leading port and shipbuilding center; on August 9, 1945 Nagasaki became the second populated area to receive an atomic bomb
- groves United States general who served as military director of the atomic bomb project (1896-1970)
- oppenheimer United States physicist who directed the project at Los Alamos that developed the first atomic bomb (1904-1967)
- harry truman elected vice president in Roosevelt's 4th term; became 33rd President of the United States on Roosevelt's death in 1945 and was elected President in 1948; authorized the use of atomic bombs against Japan (1884-1972)
- president truman elected vice president in Roosevelt's 4th term; became 33rd President of the United States on Roosevelt's death in 1945 and was elected President in 1948; authorized the use of atomic bombs against Japan (1884-1972)
- atomic explosion the explosion of an atomic bomb
- leslie richard groves United States general who served as military director of the atomic bomb project (1896-1970)
- manhattan project code name for the secret United States project set up in 1942 to develop atomic bombs for use in World War II