OOLITH is a playable word

oolith Scrabble® Dictionary

noun
pl. ooliths
oolite
38 Playable Words can be made from "OOLITH"
   2-Letter Words (9 found)
   3-Letter Words (13 found)
   4-Letter Words (12 found)
   5-Letter Words (2 found)
   6-Letter Words (2 found)