/ Dictionary / Index S synthetic fuel: Meaning and Definition of Find definitions for: synthet'ic fu'el Pronunciation: [key] fuel in the form of liquid or gasmanufactured from coal or in the form of oil extracted from shale or tar sands. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. synthetic division synthetic geometry Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language