PROPANE

n. type of flammable gas found in petroleum and natural gas

Propane is a three-carbon alkane, normally a gas, but compressible to a liquid that is transportable. It is derived from other petroleum products during oil or natural gas processing. It is commonly used as a fuel for engines, barbecues, and home heating systems.When sold as fuel, it is commonly known as liquified petroleum gas (LPG or LP-gas) which can be a mixture of propane along with small amounts of propylene, butane, and butylene. The odorant ethanethiol is also added so that people can easily smell the gas in case of a leak.
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Pro·pane n. A colorless hydrocarbon found in natural gas and petroleum and widely used as a fuel. [more]Propane - Community and Resources

Noun
1. colorless gas found in natural gas and petroleum; used as a fuel
(hypernym) gas

n. propane, type of flammable gas found in petroleum and natural gas