a chamber from which nearly all matter (especially air) has been removed

a device to create a partial vacuum, often to conduct physical experiments or test mechanical devices which must operate in outer space

The enclosure or container that is evacuated and in which the process or experiment is performed.

A metal chamber from which the air can be pumped out. Used in moldmaking to reduce air bubbles in RTV molds.

Vessel designed to remove air from products.

A vacuum chamber is a rigid enclosure from which air and other gases are removed by a vacuum pump. The resulting low pressure, commonly referred to as a vacuum, allows researchers to conduct physical experiments or to test mechanical devices which must operate in outer space (for example).