Wiktionary
n. Vehicle suspension in which compressed air is used as a spring.
Wikipedia
Air suspension is a type of vehicle suspension powered by an electric or engine-driven air pump or compressor. This compressor pumps the air into a flexible bellows, usually made from textile-reinforced rubber. The air pressure inflates the bellows, and raises the chassis from the axle.
Usage examples of "air suspension".
The itinerary called for them to spend one more day on this tributary of the Orinoco before lifting on air suspension and crossing through the jungle to the Rio Negro and thence on down to Manaus.
Its inimitable modern air suspension notwithstanding, the cruiser still reacted to a few sharp bumps and jolts as Hyaki negotiated the awkward track.
The air suspension craft hovered effortlessly some three meters above the sand.
A longer wheelbase than earlier models, and electronically controlled air suspension that made even a hundred-mile-per-hour drive through this ugly desert smooth and comfortable.
It was either put up the buildings on air suspension cells or sink deep piles into the berg.