plenum ventilation
noun
a system of mechanical ventilation in which fresh air is forced into the spaces to be ventilated from a chamber (plenum chamber) at a pressure slightly higher than atmospheric pressure, so as to expel foul air.
Origin of plenum ventilation
First recorded in 1835–45
Words nearby plenum ventilation
plenteous,
plentiful,
plenty,
plenum,
plenum system,
plenum ventilation,
pleo-,
pleochroic,
pleochroism,
pleocytosis,
pleomastia