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Meaning of VACUUM

Pronunciation:  'vakyooum

WordNet Dictionary
  1. [n]  an electrical home appliance that cleans by suction
  2. [n]  a region empty of matter
  3. [n]  the absence of matter
  4. [v]  clean with a vacuum cleaner

VACUUM is a 6 letter word that starts with V.


 Synonyms: hoover, vacuity, vacuity, vacuum cleaner, vacuum-clean
 See Also: clean, dust bag, emptiness, home appliance, Hoover, household appliance, make clean, part, region, vacuum bag



Webster's 1913 Dictionary
\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.

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.

{Vacuum brake}, a kind of continuous brake operated by
   exhausting the air from some appliance under each car, and
   so causing the pressure of the atmosphere to apply the

{Vacuum pan} (Technol.), a kind of large closed metallic
   retort used in sugar making for boiling down sirup. It is
   so connected with an exhausting apparatus that a partial
   vacuum is formed within. This allows the evaporation and
   concentration to take place at a lower atmospheric
   pressure and hence also at a lower temperature, which
   largely obviates the danger of burning the sugar, and
   shortens the process.

{Vacuum pump}. Same as {Pulsometer}, 1.

{Vacuum tube} (Phys.), a glass tube provided with platinum
   electrodes and exhausted, for the passage of the
   electrical discharge; a Geissler tube.

{Vacuum valve}, a safety valve opening inward to admit air to
   a vessel in which the pressure is less than that of the
   atmosphere, in order to prevent collapse.

{Torricellian vacuum}. See under {Torricellian}.

Dream Dictionary
 Definition: Seeing a vacuum in your dream, suggests feelings of emptiness. You may be experiencing a void in your life. Alternatively, you may need to clean up your act and your attitude. Dreaming that you are vacuuming means a loss of control.