meson[mes′än′, mez′-; mā′sän′, -zän′; mē′-]
Particle Physics any of a group of subatomic particles that are both hadrons and bosons, including the pion and kaon
Origin of meson; from 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 μέσον (méson, “middle”).