n pl , -nums, -na
1 an enclosure containing gas at a higher pressure than the surrounding environment
2 a fully attended meeting or assembly, esp. of a legislative body
3 (esp. in the philosophy of the Stoics) space regarded as filled with matter
4 the condition or quality of being full (C17: from Latin: space filled by matter, from plenus full)
n a type of air-conditioning system in which air is passed into a room at a pressure greater than atmospheric pressure
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