plural of political vacuum

plural of bee vacuum

plural of false vacuum

plural of rough vacuum

A domestic or industrial mobile machine for cleaning floors and similar surfaces that draws dust and other particles into a container (a cyclonic type bin, or a filter bag) by the suction created by an electric motor driving a fan.

Synonym of thermos / (chemistry) A Dewar vessel, a scientific instrument used to store liquified gases.

To clean with a vacuum cleaner.

a vacuum cleaner built into the fabric of a building, with a central motor and dirt bag and distributed points where a hose and appliances may be plugged in

(electronics) A type of electron tube that controls electron current through vacuum between electrodes within a sealed container, usually of glass or metal and often designed to be easily installed in and removed from the equipment in which it is used.

A region of low atmospheric pressure, especially one in which most of the air has been pumped out.