Definition of meson
: any of a group of fundamental particles (as the pion and kaon) made up of a quark and an antiquark that are subject to the strong force and have zero or an integer number of quantum units of spin
mesonicplay \me-ˈzä-nik, mā-, mē-, -ˈsä-\ adjective
Origin and Etymology of meson
International Scientific Vocabulary mes- + 2-on
First Known Use: 1939
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