Breadcrumb Home > Thesaurus > P Synonyms of propane Find synonyms for: Noun1. propane, gas, fuelusage: colorless gas found in natural gas and petroleum; used as a fuelWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of propane (Dictionary) ✖ Related Content Daily Word Quiz: legerdemain Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language