manhattan project is a noun meaning "a former United States executive agency that was responsible for developing atomic bombs during World War II". It carries 2 recorded senses.
a former United States executive agency that was responsible for developing atomic bombs during World War II
code name for the secret United States project set up in 1942 to develop atomic bombs for use in World War II
Definitions, synonyms and semantic relations for manhattan project come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.