Plenum
Plenum may refer to: ▪ Plenum chamber, a chamber intended to contain air, gas, or liquid at positive pressure ▪ Plenism, or
Horror vacui ▪ Plenum, a meeting of a deliberative assembly in which all members are present; contrast with quorum ▪ Plenum space, enclosed spaces 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, a space completely filled with matter ▪ Plenum filtration, aquarium filtration using a deep sand bed with a gap below it ▪ Plenum internal flow feature, the opposite of a bottle neck, a sudden expansion, then contraction, in pipe diameter, often found at a pipe joint ▪ Plenum, furnace, in a forced air furnace, a enclosure that acts to collect return air from one or more sources, or to supply hot air to one or more duct systems.