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

After the air chamber was reached, a good many others were taken into the secret, in order that the work might go constantly on.

From History of Morgan's Cavalry by Duke, Basil Wilson