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Related to plenum: Plenum cable
n. pl. ple·nums or ple·na (plē′nə, plĕn′ə)
1. An assembly or meeting with all members present.
2. A condition, space, or enclosure in which air or other gas is at a pressure greater than that of the outside atmosphere.
3. The condition of being full; fullness.
4. A space completely filled with matter.
5. A space lying above the ceiling in a building but below the next floor, especially one allowing movement of air between parts of the building.
n, pl -nums or -na (-nə)
1. (General Physics) an enclosure containing gas at a higher pressure than the surrounding environment
2. (Government, Politics & Diplomacy) a fully attended meeting or assembly, esp of a legislative body
3. (Philosophy) (esp in the philosophy of the Stoics) space regarded as filled with matter. Compare vacuum1
4. the condition or quality of being full
[C17: from Latin: space filled by matter, from plēnus full]
ple•num(ˈpli nəm, ˈplɛn əm)
n., pl. ple•nums, ple•na (ˈpli nə, ˈplɛn ə)
a. the space in which a gas, usu. air, is contained at a pressure greater than atmospheric pressure.
b. the gas in such a state.
2. a full assembly, as a joint legislative assembly.
3. a space serving as a receiving chamber for heated or cooled air.
[1670–80; < Latin, neuter of plēnus full1, in the phrase plēnum(spatium) full (space)]
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|Noun||1.||plenum - a meeting of a legislative body at which all members are present; "the plenum will vote on all tax increases"|
|2.||plenum - an enclosed space in which the air pressure is higher than outside|
enclosure - a structure consisting of an area that has been enclosed for some purpose