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Kind of bomb developed by Oppenheimer (crossword clue)

4 squares · Mini Crossword · December 15, 2025 · The answer stays hidden until you tap it

This clue appeared in the Mini Crossword on Monday, December 15, 2025 (8 Across). The answer is hidden below until you want it.

Answer length: 4 squares

First letter

A _ _ _

First and last letters

A _ _ M

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About the answer

ATOM as a word: (chemistry, physics) The smallest possible amount of matter which still retains its identity as a chemical element, now known to consist of a nucleus surroun...; (now generally regarded figuratively) The smallest, indivisible constituent part or unit of something.

ATOM has been an answer 10 times in the NYT Crossword and Mini since November 24, 2025.

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