Enter a clue or pattern or both:
The Clue
Semistable subatomic particle (4 letter answer)
The Answer
PION
Tags
Notes
The answer PION is seen occasionally, appearing about once every 850 puzzles.
Related Clues
Atomic particle
Nuclear binder
Nuclear particle
Subatomic particle
First meson discovered
Short-lived particle
Unstable nuclear particle
Zero-spin particle
Subatomic particle that is a nuclear binder
Definition
PION as a noun:
1. (pion, pi-meson) = a meson involved in holding the nucleus together; produced as the result of high-energy particle collision