Look up: Vacuum

1. 
   Vacuum
   A vacuum is a space from which the gas has been removed.
   Found on http://www.encyclo.co.uk/nol.php
   
   
2. 
   vacuum
   [n] - the absence of matter 2. [n] - a region empty of matter 3. [n] - an electrical home appliance that cleans by suction 4. [v] - clean with a vacuum cleaner
   Found on http://www.webdictionary.co.uk/definitio
   
   
3. 
   Vacuum
   A given space filled with gas at pressures below atmospheric pressure. Various approximate ranges are: low vacuum, 101325 to 3000 Pamedium vacuum, 3000 to 0. 133 Pahigh vacuum, 0.133 to 1.333x10^-4 Pavery high vacuum, 1.333x10^-4 to 1.333224x10^-7 Paultrahigh vacuum, 1.333224x10^-7 Pa and belowHeat TransferIn...
   Found on http://www.diracdelta.co.uk/science/sour
   
   
4. 
   vacuum
   absolute vaccuum. Compare with partial vaccuum. A volume which contains no matter.
   Found on http://antoine.frostburg.edu/chem/senese
   
   
5. 
   vacuum
   state of a region in which the gas pressure is considerably lower than atmospheric pressure Category: Mechanical engineering
   Found on http://www.mijnwoordenboek.nl/definition
   
   
6. 
   vacuum
   Origin: 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 ...
   Found on http://www.mondofacto.com/facts/dictiona
   
   
7. 
   vacuum
   vacuum cleaner noun an electrical home appliance that cleans by suction
   Found on http://wordnet.princeton.edu/perl/webwn?
   
   
8. 
   vacuum
   vacuity noun a region that is devoid of matter
   Found on http://wordnet.princeton.edu/perl/webwn?
   
   
9. 
   vacuum
   noun the absence of matter
   Found on http://wordnet.princeton.edu/perl/webwn?
   
   
10. 
    Vacuum
    A `vacuum` is a volume of space that is essentially empty of matter, such that its gaseous pressure is much less than standard atmospheric pressure. The Latin term `in vacuo` is used to describe an object as being in what would otherwise be a vacuum. The root of the word `vacuum` is the Latin adjective `vacuus` which means `empty,` but space can never be perfectly empty. A `perfect vacuum` with a gaseous pressure of absolute zero is a philosophic...
    Found on http://en.wikipedia.org/wiki/Vacuum
    
    
11. 
    vacuum
    (vak´ūm) a space devoid of air or other gas.
    Found on http://www.mercksource.com/pp/us/cns/cns
    
    
12. 
    Vacuum
    • (n.) 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. • (n.) A space entirely devoid of matter (called also, by way of distinction, abso...
    Found on http://thinkexist.com/dictionary/meaning
    
    
13. 
    vacuum
    (from the article `vacuum technology`) all processes and physical measurements carried out under conditions of below-normal atmospheric pressure. A process or physical measurement is ... ...ever attempted in the history of science—the attempt to explain the creation of truly everything from literally nothing. In other words, is th...
    Found on http://www.britannica.com/eb/a-z/v/1
    
    
14. 
    vacuum
    The state of negative pressure. A hydraulic pump works by creating a vacuum in the closed hydraulic system.
    Found on http://www.toolingu.com/definition-57034
    
    
15. 
    vacuum
    vacuum (s); vacua, vacuums (pl) ; vacuuming, vacuumed 1. Absence of matter; a space empty of matter or relatively empty of matter. 2. A space in which the pressure is significantly lower than atmospheric pressure. 3. A state of emptiness; a void. 4. A state of being sealed off from external or environmental influences; isolation. 5. Rel...
    Found on http://www.wordinfo.info/words/index/inf
    
    
16. 
    vacuum
    An empty space, one practically exhausted of air or gas. [L. ntr. of vacuus, empty]
    Found on
    
    
17. 
    Vacuum
    Pressures below 1 atmosphere. Units are; inches of mercury ('Hg), millimeters (mm Hg), microns (mHg), and generally 10-N (millimeters of mercury). see Insulating Vacuum
    Found on http://www-bdnew.fnal.gov/operations/acc
    
    
18. 
    vacuum
    
    1. the absence of matter
    2. a region empty of matter
    3. an electrical home appliance that cleans by suction
    
    Found on
    
    
19. 
    Vacuum
    Any pressure less than atmospheric. Can present a problem for the elastomer in many seal applications.
    Found on http://www.mcnallyinstitute.com/Charts/G
    
    
20. 
    Vacuum
    Pressures below 1 atmosphere. Units are; inches of mercury ('Hg), millimeters (mm Hg), microns (mHg), and generally 10-N (millimeters of mercury). see Insulating Vacuum
    Found on http://www-bdnew.fnal.gov/operations/acc
    
    
21. 
    Vacuum
    refers to a volume of space that has little or no pressure due to the absence of air or any other gasses; there are differing degrees of vacuum, which is why Empire Magnetics offers three different grades of vacuum rated motors and related products.
    Found on http://www.empiremagnetics.com/glossary/
    
    
22. 
    Vacuum
    Dictionary: Empty space, devoid of matter.
    Found on http://www.amgas.com/gloss.htm
    
    
23. 
    vacuum
    In the simplest sense, empty space. However, since a vacuum, either natural or artificial, is never completely empty, the term needs a modifier. Thus scientists speak of a hard vacuum, quantum vacuum, and so forth. See also Casimir effect, vacuum energy drive, and zero point energy.
    Found on http://www.daviddarling.info/encyclopedi
    
    
24. 
    vacuum
    vacuum, theoretically, space without matter in it. A perfect vacuum has never been obtained; the best man-made vacuums contain less than 100,000 gas molecules per cc, compared to about 30 billion billion (30×1018) molecules for air at sea level. The most nearly perfect vacuum exists in intergal...
    Found on http://www.infoplease.com/ce6/sci/A08503