Definitions for "natural gas"
The combustible gas found associated with petroleum deposits, and also in other geological formations, comprised predominantly of methane plus variable other constitutents. It is an important source of energy, and is transported long distances by pipelines, or in a liquefied state in tankers, for commercial distribution. Some natural gas deposits contain helium, and comprise the primary source of that rare element.
A gas occurring naturally in the earth, such as methane, ethane, butane, and propane.
The gaseous forms of petroleum such as mixtures of hydrocarbon gases and vapors.
a vitally important source of energy for all sectors of the economy in the United States