| Propane (n.) A heavy gaseous hydrocarbon, C3H8, of the paraffin series, occurring naturally dissolved in crude petroleum, and also made artificially; -- called also propyl hydride. Thesaurus Entries alcohol, benzine, briquette, burnable, butane, carbon, charcoal, coal, coke, combustible, dope, ethane, ethanol, fireball, firing, flammable, flammable material, fuel, fuel additive, fuel dope, gas, gas carbon, gasoline, heptane, hexane, inflammable, inflammable material, isooctane, jet fuel, kerosene, methane, methanol, natural gas, octane, oil, paraffin, peat, pentane, propellant, rocket fuel, turf |