OSMOSIS is a playable word

osmosis Scrabble® Dictionary

noun
pl. osmoses
a form of diffusion of a fluid through a membrane
28 Playable Words can be made from "OSMOSIS"
   2-Letter Words (8 found)
   3-Letter Words (10 found)
   4-Letter Words (7 found)
   5-Letter Words (2 found)
   7-Letter Words (1 found)