follow Dictionary.com

Dictionary.com's Word of the Year is...

Manhattan Project

noun
1.
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.
Origin
extracted from U.S. Army Corps of Engineers Manhattan District and DSM (Development of Substitute Materials) Project
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source
British Dictionary definitions for Manhattan Project

Manhattan Project

noun
1.
(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
Cite This Source
Manhattan Project in Culture

Manhattan Project definition


The code name for the effort to develop atomic bombs 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 and Nagasaki.

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Cite This Source

Word of the Day

Difficulty index for Manhattan Project

Few English speakers likely know this word

Word Value for Manhattan

0
16
Scrabble Words With Friends