/ Thesaurus / S Synonyms of spark transmitter Find synonyms for: Noun1. spark transmitter, radio transmitterusage: an early radio transmitter using a discharge across a spark gap as the source of its powerWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: eccentric Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language