/ Thesaurus / G Synonyms of gamma radiation Find synonyms for: Noun1. gamma radiation, gamma ray, electromagnetic radiation, electromagnetic wave, nonparticulate radiationusage: electromagnetic radiation emitted during radioactive decay and having an extremely short wavelengthWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: endear Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language