What is the answer to "Universal building block" in the NYT Crossword?

The answer to the NYT Crossword clue "Universal building block" is ATOM (4 letters).

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NYT

Universal building block NYT Crossword Clue

Across clue · from the November 24, 2025 puzzle

Stuck on “Universal building block” from the New York Times Crossword? Here is the verified answer:

Answer

ATOM

4 letters · Across · last seen November 24, 2025