MANHATTAN PROJECT(noun)Did you mean?Synonyms RhymesAlso try..projectmanhattanDefinitions There are 2 meanings of the phrase Manhattan Project. Manhattan Project - as a noun 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 Word Variations & RelationsStarts MStarts MAStarts MANStarts MANHEnds TEnds CTEnds ECTEnds JECTStarts M & ends TStarts MA & ends TStarts M & ends CTA-Z Proximitiesmanhandle15manhandled17manhandles16manhandling18manhattan14 Manhattan Project manhattans15manhole12manholes13manhood13manhoods14