compressed gas

English Thesaurus

1. gas at a high pressure that can be used as a propellant (noun.substance)

hypernym	:	propellant, propellent,
definition	:	any substance that propels (noun.substance)

hypernym	:	gas,
definition	:	a fluid in the gaseous state having neither independent shape nor volume and being able to expand indefinitely (noun.substance)

hyponym	:	compressed air,
definition	:	air at a pressure greater than that of the atmosphere (noun.substance)