Plenum

Plenum may refer to:

  • Plenum chamber, a chamber intended to contain air, gas, or liquid at positive pressure
  • Plenism, or Horror vacui ("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
  • Plenum filtration, aquarium filtration using a deep sand bed with a gap below it