Word Study
pion
WORDNET DICTIONARY
Noun pion has 1 sense
- pion(n = noun.object) pi-meson - a meson involved in holding the nucleus together; produced as the result of high-energy particle collision; Array is a kind of meson, mesotron
OXFORD DICTIONARY
pion, n. Physics a meson having a mass approximately 270 times that of an electron. Also called pi meson (see PI(1)).
Derivative
pionic adj.
Etymology
PI(1) (the letter used as a symbol for the particle) + -ON
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