Pion

//ˈpaɪɒn// noun

Definitions

Noun
  1. 1
    Any of three semistable mesons, having positive, negative or neutral charge, composed of up and down quarks/antiquarks. particle
  2. 2
    a meson involved in holding the nucleus together; produced as the result of high-energy particle collision wordnet

Etymology

From pi + -on, as alteration of pi-meson.

Next best steps

Mini challenge

Unscramble this word: pion