plenum

Meaning

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 produce less smoke and fumes in the event of fire.

Related

Opposite words

• vacuum

Origin

• From Latin plēnum, noun use of neuter of plēnus. The sense of "legislative meeting" is a , from the same Latin source.