Manhattan Project

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noun

U.S. History. 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.

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Origin of Manhattan Project

Extracted from U.S. Army Corps of Engineers Manhattan District and DSM (Development of Substitute Materials) Project

Words nearby Manhattan Project

Manhattan, Manhattan Beach, Manhattan clam chowder, Manhattan District, Manhattanite, Manhattan Project, manhelper, Manhire, manhole, manhood, manhood suffrage

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use Manhattan Project in a sentence

I started just writing these songs, at first it felt like a project or something.
Deer Tick's John McCauley on Ten Years in Rock and Roll|James Joiner|January 2, 2015|DAILY BEAST
The detectives learned early on that Brinsley had arrived by bus in Manhattan.
Exclusive: Inside a Cop-Killer’s Final Hours|Michael Daly|December 31, 2014|DAILY BEAST
Thus begins an episode of The Mindy Project centered around a guy trying to have butt sex with his girlfriend.
Year of the Butt: How the Booty Changed the World in 2014|Kevin Fallon|December 30, 2014|DAILY BEAST
Riots broke out in 1994, after Iranian authorities replaced a Sunni mosque in Mashad with a development project.
The Dangerous Drug-Funded Secret War Between Iran and Pakistan|Umar Farooq|December 29, 2014|DAILY BEAST

Gurley was gunned down on Nov. 20, when a pair of cops was patrolling the rough housing project.
Protesters Demand Justice For Gurley As Gap Grows Between Cops and NYC|M.L. Nestel|December 28, 2014|DAILY BEAST
The worthy knight not being now alive to veto the project, a figure of him has been placed opposite the College in Edmund Street.
Showell's Dictionary of Birmingham|Thomas T. Harman and Walter Showell
Her black eyes were fixed intently on his face, but she was thinking, weighing in her mind some suddenly-formed project.
The Red Year|Louis Tracy
Very soon I induced my directors to adopt the view that the railway company must encourage and help the project.
Fifty Years of Railway Life in England, Scotland and Ireland|Joseph Tatlow
New York is like one of those nightmares a certain class of writers project and label 'Earth in the Year 2000.'
Ancestors|Gertrude Atherton
The project of a congress was accordingly abandoned, and everywhere recrimination gave place to rejoicing.
The Eve of the Revolution|Carl Becker

British Dictionary definitions for Manhattan Project

Manhattan Project

noun

(during World War II) the code name for the secret US project set up in 1942 to develop an atomic bomb

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Cultural definitions for Manhattan Project

Manhattan Project

The code name for the effort to develop atomic bombs (see also atomic bomb) for the United States during World War II. The first controlled nuclear reaction took place in Chicago in 1942, and by 1945, bombs had been manufactured that used this chain reaction to produce great explosive force. The project was carried out in enormous secrecy. After a test explosion in July 1945, the United States dropped atomic bombs on the Japanese cities of Hiroshima (see also Hiroshima) and Nagasaki.