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⇱ Manhattan Project - WordReference.com Dictionary of English

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Manhattan Project

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WordReference Random House Unabridged Dictionary of American English © 2026

Manhat′tan Proj′ect,

Government[U.S. Hist.]the unofficial designation for the U.S. War Department's secret program, organized in 1942, to explore the isolation of radioactive isotopes and the production of an atomic bomb: initial research was conducted at Columbia University in Manhattan.

extracted from U.south, southern. Army Corps of Engineers Manhattan District and DSM (Development of Substitute Materials) Project

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