'hyperon' definitions:
Definition of 'hyperon'
(from WordNet)
noun
Any baryon that is not a nucleon; unstable particle with mass greater than a neutron
Definition of 'hyperon'
From: GCIDE
- hyperon \hyperon\ n. (Physics) Any baryon that is not a nucleon; it is an unstable particle with a mass greater than that of a neutron. [WordNet 1.5]