noun, plural ple·nums, ple·na [plee-nuh, plen-uh] /ˈpli nə, ˈplɛn ə/.
Origin of plenum
Examples from the Web for plenum
Referendum Law inches closer to basic law status after plenum vote.
Let any external power be applied against the plenum and it would be smashed, hurled back full force upon its source.Zero Data|Charles Saphro
The same is true of many other facts besides a plenum and a vacuum.Curiosities of Heat|Lyman B. Tefft
Continue to think this world as neither a vacuum nor a plenum; nor a material or spiritual substance.
British Dictionary definitions for plenum
noun plural -nums or -na (-nə)
Word Origin for plenum
Word Origin and History for plenum
1670s, "filled space" (opposite of vacuum), from Latin plenum (spatium) "full (space)," neuter of adjective plenus "complete, full" (see plenary). The meaning "of a full assembly of legislators" is first recorded 1772.