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Dictionary

Manhat'tan Proj"ect

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.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

Manhattanite

manhelper

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