fossil fuel Synonyms

thing similar to oil nonrenewable energy hydrocarbon deposit nonrenewable fuel source non-renewable source of energy gas and crude oil hydrocarbon-containing material of biological origin crude fuel natural petroleum crude naphtha fuel formed by natural processes extracted oil organic fuel natural fuel said oil organic oils organic oil organic gas non-renewable hydrocarbon combustible organic material based fuel geologic deposits of organic materials non-renewable source of fuel non-renewable fuel source non-renewable energy source shale oil pit coal coal gas lignitic kerosene humic gasoline gas fuel firewood coal cannel coal butylene bitumen naphtha oil biofuel biodiesel crude oil natural gas bituminous coal biomass animal fat propylene petroleum