Crossword Genius

Subatomic particle (6)

Ross

'subatomic particle' is the definition.
(meson is a kind of subatomic particle)

This is the entire clue.

(Other definitions for meson that I've seen before include "Quark/antiquark particle" , "Elementary particle" , "tiny particle" , "Smaller particle than a proton" , "Something small" .)

I've seen this clue in The Times and the Newsday.
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