/ Thesaurus / K Synonyms of kappa meson Find synonyms for: Noun1. kaon, kappa-meson, k-meson, K particle, meson, mesotronusage: an unstable meson produced as the result of a high-energy particle collisionWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: ontiguous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language