MESOSOME is a playable word

mesosome Scrabble® Dictionary

noun
pl. mesosomes
a specialized cellular part
50 Playable Words can be made from "MESOSOME"
   2-Letter Words (9 found)
   3-Letter Words (14 found)
   4-Letter Words (18 found)
   5-Letter Words (7 found)
   6-Letter Words (1 found)
   8-Letter Words (1 found)