/ Thesaurus / A Synonyms of alpha decay Find synonyms for: Noun1. alpha decay, decay, radioactive decay, disintegrationusage: radioactive decay of an atomic nucleus that is accompanied by the emission of an alpha particleWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: loathe Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language