BIOGASES Antonyms

• fossil fuel consisting of carbonized vegetable matter deposited in the Carboniferous period

• a hot fragment of wood or coal that is left from a fire and is glowing or smoldering

• burn to charcoal

• supply with coal

• take in coal

• an internal-combustion engine that burns heavy oil

• German engineer (born in France) who invented the diesel engine (1858-1913)

• a volatile flammable mixture of hydrocarbons (hexane and heptane and octane etc.) derived from petroleum; used mainly as a fuel in internal-combustion engines

• a slippery or viscous liquid or liquefiable substance not miscible with water

• oil paint containing pigment that is used by an artist

• a dark oil consisting mainly of hydrocarbons

• any of a group of liquid edible fats that are obtained from plants

• cover with oil, as if by rubbing

• administer an oil or ointment to; often in a religious ceremony of blessing

• a dark oil consisting mainly of hydrocarbons

• colorless gas found in natural gas and petroleum; used as a fuel

• not known

• an unknown and unexplored region

• anyone who does not belong in the environment in which they are found

• a variable whose values are solutions of an equation

• being or having an unknown or unnamed source

• not known to exist

• not famous or acclaimed

• not known before

• a fossil fuel in the gaseous state; used for cooking and heating homes