air gas

noun

This defect was overcome by the use of lighter-than-air gas.

This restless air-gas cannot be stored outside of the body, any better than it can be inside.

Apparatus for preparing air-gas have been devised and constructed by Marcus, Mille, Methei, and others.

It is difficult to give reliable data as to the cost of air-gas, inclusive of the expenses of production.

"Air-gas" is ordinary atmospheric air, more or less completely saturated with the vapour of some highly volatile hydrocarbon.

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