/ Thesaurus / S Synonyms of soldering flux Find synonyms for: Noun1. soldering flux, fluxusage: flux applied to surfaces that are to be joined by soldering; flux cleans the surfaces and results in a better bondWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: labyrinth Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language