/ Thesaurus / R Synonyms of radio signal Find synonyms for: Noun1. radio signal, radio wave, radio emission, radio radiationusage: a radio wave used to transmit and receive messagesWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: aversion Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language