baryonPronunciation: /ˈbarɪɒn/Definition of baryon noun Physics a subatomic particle, such as a nucleon or hyperon, that has a mass equal to or greater than that of a proton. Derivatives baryonicPronunciation: /-ˈɒnɪk/ adjective Origin: 1950s: from Greek barus 'heavy' + -onbaryon in other Oxford dictionaries Definition of baryon in the US English dictionary
