air chamber

American  

noun

1. a chamber containing air, as in a pump, lifeboat, or organic body.

2. Also called air cushion.  a compartment of a hydraulic system containing air that by its elasticity equalizes the pressure and flow of liquid within the system.

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Etymology

Origin of air chamber

First recorded in 1840–50

Example Sentences

A protective cap prevents debris from entering, while a small air chamber allows airflow.

From Science Daily • Apr. 19, 2026

Inflating the air chamber forces the fins to bend -- similar to the down stroke when a manta flaps its fins.

From Science Daily • Dec. 4, 2024

The pollutant levels are carefully measured and controlled, then fed into an air chamber - essentially a room-sized plastic sac - and piped out to the volunteers to breathe in.

From BBC • Dec. 15, 2023

There’s a third air chamber located near the bottom of the mouth area, but it’s passive and doesn’t feature a fan.

From The Verge • Oct. 21, 2021

The blast is admitted above the grate, and the mouth of the air chamber being ordinarily closed, the blast is not affected by the grate.

From Scientific American magazine, Vol. 2 Issue 1 The advocate of Industry and Journal of Scientific, Mechanical and Other Improvements by Porter, Rufus