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vacuum pump

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noun
  1. a pump or device by which a partial vacuum can be produced.

Origin of vacuum pump

First recorded in 1855–60
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for vacuum pump

vacuum pump

noun
  1. a pump for producing a low gas pressure
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012