plenum

Definitions

Cars & Driving

  • noun an enclosure containing air or gas at a higher pressure than exists outside

Construction

  • A closed chamber used to distribute or collect warmed or cooled air in a forced air heating/cooling system.
  • The space between the suspended ceiling and the floor above.
  • The space between a raised floor and the floor below.
  • A closed chamber used to collect or distribute fluids in a distribution or collection system.

Electronics

  • An enclosure whose gas pressure is higher than the surrounding environment.
  • In a structure, such as an office building, a space between real ceilings and drop ceilings, or between walls or floors, which can be used to run wires and cables.

Politics

  • noun a meeting at which all members of a group are present
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