Definition of Manhattan Project in English:

Manhattan Project

Syllabification: Man·hat·tan Pro·ject
The code name for the American project set up in 1942 to develop an atom bomb. The project culminated in 1945 with the detonation of the first nuclear weapon, at White Sands in New Mexico.

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Word of the day neoteny
Pronunciation: niːˈɒt(ə)ni
noun
retention of juvenile features in the adult animal