Particle Physics a subatomic particle that is both a hadron and a fermion, as a nucleon or hyperon: the proton is the baryon with the smallest mass
Origin of baryonfrom Classical Greek barys, heavy (see grave) + (electr)on
Any of a class of subatomic particles that are both hadrons and fermions, are composed of three quarks, participate in strong interactions, and are generally more massive than mesons and leptons. The class of baryons is divided into the nucleons and hyperons.
Origin of baryonGreek barus heavy ; see gwerə-1 in Indo-European roots. -on 1
From Ancient Greek βαρύς (barus, “heavy”) + -on