Hadron Definition
Hadron is a subatomic particle. All subatomic particles affected by strong interaction are called hadrons. Hadrons, including baryons and mesons.
According to the standard model theory in modern particle physics, hadrons are composed of quarks, antiquarks and gluons. Gluons are the basic particles in quantum chromodynamics, which connect quarks together, and hadrons are the products of these connections.