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vacuum |
2 definitions found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Vacuum \Vac"u*um\, n.; pl E. {Vacuums}, L. {Vacua}. [L., fr vacuus empty. See {Vacuous}.] 1. (Physics) A space entirely devoid of matter (called also by way of distinction, absolute vacuum); hence in a more general sense a space, as the interior of a closed vessel, which has been exhausted to a high or the highest degree by an air pump or other artificial means as water boils at a reduced temperature in a vacuum. From WordNet r 1.6 [wn]: vacuum n 1: the absence of matter [syn: {vacuity}] 2: a region empty of matter [syn: {vacuity}] 3: an electrical home appliance that cleans by suction [syn: {vacuum cleaner}] v : clean with a vacuum cleaner [syn: {vacuum-clean}, {hoover}]
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