CERIUM is a playable word

cerium Scrabble® Dictionary

noun
pl. ceriums
a metallic element
40 Playable Words can be made from "CERIUM"
   2-Letter Words (7 found)
   3-Letter Words (16 found)
   4-Letter Words (12 found)
   5-Letter Words (3 found)
   6-Letter Words (2 found)