a classification of sub-atomic particle , defined as a baryonic (and hence hadronic ) fermion with non-zero strangeness
Baryon of higher mass and or made up of a different flavor triplet of quarks than the proton or neutron. Not produced naturally on earth.
In particle physics, a hyperon is any subatomic particle which is a baryon (and hence a hadron and a fermion) with non-zero strangeness, but with zero charm and zero bottomness.