An air compartment or chamber that connects one or more ducts and forms part of an air-distribution system for moving air under a slight positive pressure.
Merriam-Webster Online Dictionaryplenum (noun)
a) a space or all space every part of which is full of matter
b) an air-filled space in a structure , especially one that receives air from a blower for distribution (as in a ventilation system)
a general assembly of all members especially of a legislative body
the quality or state of being full
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Plenum may refer to:
- Plenum chamber, a chamber intended to contain air, gas, or liquid at positive pressure
- Plenism, or Horror vacui (physics) the concept that "nature abhors a vacuum"
- Plenum (meeting), a meeting of a deliberative assembly in which all members are present; contrast with quorum
- Plenum space, enclosed spaces (in buildings) used for airflow
- Plenum cable, electrical wire permitted in plenum spaces per building codes
- Plenum Publishing Corporation, a publisher of scientific books and journals
- Plenum (physics), a space completely filled with matter
- Undergravel filters, in aquarium filtration, an open space under a layer of gravel or sand
- Air-mixing plenum, a place where ducts meet
- Plenum, the air above the roof.