a pump or device by which a partial vacuum can be produced.
a pump for producing a low gas pressure
Collins English Dictionary - Complete & Unabridged 10th Edition
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Vacuum pump filters are usually located upstream of the central vacuum pump.
Tesla counters that the fuse for the braking system's electric vacuum pump failed.
Peristaltic pumps utilize a self-priming or power-operated vacuum pump.
In this case, leaving the cooler energized while connecting the vacuum pump was not necessary.
The pressurized sterilizers use a water-sealed vacuum pump to evacuate the chamber.