Breadcrumb Home > Thesaurus > P Synonyms of pion Find synonyms for: Noun 1. pion, pi-meson, meson, mesotron usage: a meson involved in holding the nucleus together; produced as the result of high-energy particle collision WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of pion (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Chinese New Year History, Meaning, and Celebrations Current Events This Week: February 2024 Valentine's Day Valentine's Day History Mardi Gras 30 "Charlie and the Chocolate Factory" Quotes ✖ Related Content Daily Word Quiz: ailurophobia Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language