Definition of "plenum"
- noun
A space that is completely filled with matter.
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.
A type of network cabling which satisfies plenum-ratings issued by the National Electrical Code. These cables are safer in case of a fire, producing less smoke and fumes.
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