천연가스에 포함되어 있으며 병에 담긴 연료로 사용되는 알칸 계열의 가연성 탄화수소 가스.
A flammable hydrocarbon gas of the alkane series, present in natural gas and used as bottled fuel.
예문:
"Many rural households rely on propane tanks for heating and cooking."
"Propane is a byproduct of natural gas processing and petroleum refining."
"The outdoor grill was connected to a portable propane cylinder."