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Meaning of PLENUM

Pronunciation:  'pleenum

 
WordNet Dictionary
 
 Definition: 
[n]  an enclosed space in which the air pressure is higher than outside
 

PLENUM is a 6 letter word that starts with P.

 

 See Also: enclosure

 

 

Webster's 1913 Dictionary
 
 Definition: 
  1. \Ple"num\, n. (Ventilation)
    A condition, as in an occupied room, in which the pressure of
    the air is greater than that of the outside atmosphere; as, a
    plenum may exist in a hall ventilated by a fan blower.
    
    
  2. \Ple"num\, n. [L., fr. plenus full.]
    That state in which every part of space is supposed to be
    full of matter; -- opposed to vacuum. --G. Francis.
    
    
 
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