Enter a clue or pattern or both:
The Clue
Subatomic particle made of three quarks (6 letter answer)
The Answer
BARYON
Tags
Notes
The answer BARYON is so rare that it appears less than once every 2500 puzzles.
Definition
BARYON as a noun:
1. (baryon, heavy particle) = any of the elementary particles having a mass equal to or greater than that of a proton and that participate in strong interactions; a hadron with a baryon number of +1