Definition, Meaning & Synonyms
plenum
noun
/ˈplɛn.əm/

Definition
A space, often filled with matter or energy, that is completely filled with something, typically used in a scientific or technical context.

Examples
- The plenum in the heating system helps distribute warm air throughout the building.
- In physics, a plenum is used to discuss areas filled with gas or fluid.

Meaning
In a plenum, all points are filled with a gas, fluid, or another substance, as opposed to a vacuum, where there is none.

Synonyms
- fullness
- swelling
- complete space