Plenum Definition

plēnəm, plĕnəm
plena, plenums
noun
A full or general assembly, as of all members of a legislative body.
Webster's New World
Fullness.
Webster's New World
Space filled with matter.
Webster's New World
An enclosed volume of gas under greater pressure than that surrounding the container.
Webster's New World
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.
American Heritage
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Other Word Forms of Plenum

Noun

Singular:
plenum
Plural:
plena, plenums

Origin of Plenum

  • From Latin plÄ“num, noun use of neuter of plÄ“nus (“full"). Influenced by Russian пленум (plénum, “plenary session"), from the same Latin source.

    From Wiktionary

  • Latin plēnum (spatium) full (space) neuter of plēnus pelə-1 in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

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