Enter a clue or pattern or both:

The Clue

Particle created by a cosmic ray (4 letter answer)

The Answer

MUON

Tags


Notes

The answer MUON is rarely seen, appearing only about once every 1100 puzzles.

Related Clues

Atomic particle
Elementary particle
Physics particle
Subatomic particle
Unstable lepton
Unstable particle

Definition

MUON as a noun:

1. (muon, negative muon, mu-meson) = an elementary particle with a negative charge and a half-life of 2 microsecond; decays to electron and neutrino and antineutrino