synfuel definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
a fuel, usually produced by making oil or gas from coal or by making methane from plant cellulose, used as a substitute as for petroleum or natural gas
Origin: syn(thetic) plush fuel
synfuel definition by American Heritage Dictionary
A liquid or gaseous fuel derived from coal, shale, or tar sand, or obtained by fermentation of certain substances, such as grain.
Origin: syn(thetic) + fuel.