noun
vacuum
A space containing little or no matter.
The pump removes air from the chamber to create a vacuum.
Etymology
The Latin adjective means empty. The noun names a space emptied of matter, completely in the ideal case or approximately in practice.
In context
it is the world's biggest vacuum chamber it's used to test spacecraft in the conditions of outer space and it does that by pumping out the 30 tons of air
More examples
- Sound cannot travel through a perfect vacuum.
- A vacuum between the bottle's walls slows heat transfer.
- The mayor's sudden resignation leaves a power vacuum.
Forms
vacuum · vacuums · vacua