noun🔗ShareBaryonsA heavy subatomic particle created by the binding of quarks by gluons; a hadron containing three quarks. Baryons have half-odd integral spin and are thus fermions. This category includes the common proton and neutron of the atomic nucleus."The nucleus of an atom is made up of baryons, like protons and neutrons. "Le noyau d'un atome est constitué de baryons, comme les protons et les neutrons.physicsmasselementscienceChat with AIVocabulary GamePractice Reading