hyperon

English Thesaurus

1. any baryon that is not a nucleon; unstable particle with mass greater than a neutron (noun.object)

hypernym	:	baryon, heavy particle,
definition	:	any of the elementary particles having a mass equal to or greater than that of a proton and that participate in strong interactions; a hadron with a baryon number of +1 (noun.object)

hyponym	:	lambda hyperon, lambda particle,
definition	:	an electrically neutral baryon with isotopic spin 1 (noun.object)