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Meaning of PLENUM

Pronunciation:  'pleenum

WordNet Dictionary
[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
  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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