ATRIUM is a playable word

atrium Scrabble® Dictionary

noun
pl. atriums or atria
the main room of an ancient Roman house
48 Playable Words can be made from "ATRIUM"
   2-Letter Words (12 found)
   3-Letter Words (24 found)
   4-Letter Words (10 found)
   5-Letter Words (1 found)
   6-Letter Words (1 found)