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Related to Sprengel pump: vacuum pump
Spreng´el pump`(sprĕng´el pŭmp`)
|1.||(Physics) A form of air pump in which exhaustion is produced by a stream of mercury running down a narrow tube, in the manner of an aspirator; - named from the inventor.|
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.