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WordReference Random House Unabridged Dictionary of American English © 2024Hahn (hän),USA pronunciation n. - Biographical Otto, 1879–1968, German chemist: Nobel prize 1944.
Collins Concise English Dictionary © HarperCollins Publishers:: Hahn /German: haːn/ n - Kurt. 1886–1974, German educationalist. During the Nazi era he escaped to Britain, where he founded Gordonstoun School (1935) and helped to establish the Duke of Edinburgh's award scheme
- Otto (ˈɔto). 1879–1968, German physicist: discovered the radioactive element protactinium with Meitner (1917); with Strassmann, demonstrated the nuclear fission of uranium, when it is bombarded with neutrons: Nobel prize for chemistry 1944
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