/ Thesaurus / J Synonyms of joseph john thomson Find synonyms for: Noun1. Thomson, Joseph John Thomson, Sir Joseph John Thomsonusage: English physicist who experimented with the conduction of electricity through gases and who discovered the electron and determined its charge and mass (1856-1940)WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language