PLENUM is a playable word

plenum Scrabble® Dictionary

noun
pl. plenums or plena
space considered as fully occupied by matter
34 Playable Words can be made from "PLENUM"
   2-Letter Words (11 found)
   3-Letter Words (12 found)
   4-Letter Words (7 found)
   5-Letter Words (2 found)
   6-Letter Words (2 found)