Vacuum
Definition of Vacuum
Vac´u`um Pronunciation: văk´ũ`ŭm n. | 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. | | 2. | The condition of rarefaction, or reduction of pressure below that of the atmosphere, in a vessel, as the condenser of a steam engine, which is nearly exhausted of air or steam, etc.; as, a vacuum of 26 inches of mercury, or 13 pounds per square inch. |
Related Words
absence, absence of mind, blank, blankness, broom, brush, brush off, clean slate, deprivation, empty space, empty-headedness, hollowness, inanity, jejunity, mental void, negation, negativeness, negativity, nihility, nonbeing, nonentity, nonexistence, nonoccurrence, nonreality, nonsubsistence, not-being, nothing, nothingness, nullity, sweep, sweep out, sweep up, tabula rasa, unactuality, unreality, vacancy, vacuity, vacuousness, vacuum-clean, vapidity, whisk
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