Particle Physics any of a group of subatomic particles that are both hadrons and bosons, including the pion and kaon
Origin of mesonfrom mes(otr)on
Any of a class of subatomic particles that are both hadrons and bosons, are composed of a quark and an antiquark, participate in strong interactions, and have masses generally intermediate between those of leptons and baryons.
Origin of mesonmeso- -on
- (rare except entomology) The mesial plane dividing the body into similar right and left halves.
From Ancient Greek Î¼ÎÏƒÎ¿Î½ (mÃ©son, “middle").
From meso- +"Ž on.