PLENUM
plenum
(noun) an enclosed space in which the air pressure is higher than outside
plenum
(noun) a meeting of a legislative body at which all members are present; “the plenum will vote on all tax increases”
Source: WordNet® 3.1
Etymology
Noun
plenum (plural plenums or plena)
(physics) A space that is completely filled with matter.
(figuratively) A state of fullness, a great quantity (of something).
A legislative meeting (especially of the Communist Party) in which all members are present.
An enclosed space having greater than atmospheric pressure.
The space above a false ceiling used for cables, ducts etc.
(computing) A type of network cabling which satisfies plenum-ratings issued by the National Electrical Code. These cables produce less smoke and fumes in the event of fire.
Antonyms
• vacuum
Anagrams
• lumpen
Source: Wiktionary
Ple"num, n. Etym: [L., fr. plenus full.]
Definition: That state in which every part of space is supposed to be full
of matter; -- opposed to vacuum. G. Francis.
Source: Webster’s Unabridged Dictionary 1913 Edition