/ Thesaurus / T Synonyms of thermionic current Find synonyms for: Noun1. thermionic current, current, electric currentusage: an electric current produced between two electrodes as a result of electrons emitted by thermionic emissionWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: acerbity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language