fuel -
a substance that can be consumed to produce energy; "more fuel is needed during the winter months"; "they developed alternative fuels for aircraft"
substance the real physical matter of which a person or thing consists; "DNA is the substance of our genes"
biomass the total mass of living matter in a given unit area
butane occurs in natural gas; used in the manufacture of rubber and fuels
fire the act of firing weapons or artillery at an enemy; "hold your fire until you can see the whites of their eyes"; "they retreated in the face of withering enemy fire"
fossil fuel fuel consisting of the remains of organisms preserved in rocks in the earth's crust with high carbon and hydrogen content
gasohol a gasoline substitute consisting of 90% gasoline and 10% grain alcohol from corn
gasolene,
gasoline,
petrol,
gas a volatile flammable mixture of hydrocarbons (hexane and heptane and octane etc.) derived from petroleum; used mainly as a fuel in internal-combustion engines
illuminant something that can serve as a source of light