MESOMERES is a playable word

mesomere Scrabble® Dictionary

noun
pl. mesomeres
an embryonic segment
103 Playable Words can be made from "MESOMERES"
   2-Letter Words (12 found)
   3-Letter Words (24 found)
   6-Letter Words (9 found)
   7-Letter Words (4 found)
   8-Letter Words (1 found)
   9-Letter Words (1 found)