Definitions
Any of the constituent particles making up a compound particle, e.g.
the quarks and gluons which make up hadrons.
Word origin
Coined by American physicist Richard Feynman in 1969, from part + -on.
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer2 curated clues
01“Subatomic constituent”6 letters
02“Dolly of country”6 letters
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