Unstable subatomic particle
The crossword clue "Unstable subatomic particle" is answered by MUON, a 4-letter entry. Used 15 times across 12 distinct years; most recently in 2025. It appears in 8 publications in the xd corpus. Every figure on this page comes from the collection data itself, never from a guess.
The answer
MUON
4 letters. See every clue for this answer on the MUON answer page.
Used 15 times across 12 distinct years; most recently in 2025. It appears in 8 publications in the xd corpus. Frequency and last-seen figures come from the xd crossword corpus only.
Other answers for this clue
The same clue has also been answered these ways in the xd corpus. Answers inside this collection link to their own answer page.
Other clues for MUON
Every other clue in this collection answered by MUON, most used first.
- Unstable particle - used 23 times, most recently in 2020
- Subatomic particle - used 21 times, most recently in 2025
- Elementary particle - used 7 times, most recently in 2015
- Atomic particle - used 6 times, most recently in 2015
Related clues
Clues in this collection of the same answer length that share a word with this clue, or match its answer pattern when no word is shared. Most used first.
- Tiny particle - ATOM, used 96 times
- Particle - ATOM, used 82 times
- Subatomic particle - PION, used 39 times
- Dust particle - MOTE, used 21 times
- Minute particle - ATOM, used 21 times
- Basic particle - ATOM, used 19 times
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