Pion

Pronunciation

IPA: /ËˆpaÉªÉ’n/

Origin

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

Full definition of pion

Noun

pion

(plural pions)

(particle) Any of three semistable mesons, having positive, negative or neutral charge, composed of up and down quarks/antiquarks. either Ï€⁰, a neutral form with a mass 264 times that of an electron, or Ï€⁺ or Ï€

—, a charged form with a mass 273 times that of an electron.

Note: Ï€⁺ is a combination of an up quark and a down antiquark, Ï€

— is a combination of an up antiquark and a down quark, Ï€⁰ is a quantum mixture of an up quark, up antiquark pair and a down quark, down antiquark pair !

Synonyms

pi meson

Anagrams

INOP