Natural gas extracted from shale.

Third-person singular simple present indicative form of pass gas

present participle of pass gas

simple past tense and past participle of pass gas

(obsolete, organic chemistry) ethylene

A mixture of hydrogen and carbon monoxide produced by passing steam over hot coke; used as a domestic fuel

(underwater diving) A mixture of gases used for respiration in breathing equipment, typically in scuba diving.

A chemically inert gas used as the mobile phase in gas chromatography

Any nonreactive gas that is used to fill containers of perishable produce, tyres etc

(physics) A tall, slim centrifuge that is used to separate gases containing different isotopes