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Dictionary


pump•ing



Pronunciation: (pum'ping), [key]
n.
1. the act or process of pumping or the action of a pump.
2. Meteorol.rapid change in the height of the column in a mercury barometer, resulting from fluctuations in the surrounding air pressure.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

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