/ Thesaurus / H Synonyms of hydrogen ion concentration Find synonyms for: Noun1. hydrogen ion concentration, concentrationusage: the number of moles of hydrogen ions per cubic decimeterWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: inutiae Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language