SEMIDOME is a playable word

semidome Scrabble® Dictionary

noun
pl. semidomes
a half dome
115 Playable Words can be made from "SEMIDOME"
   2-Letter Words (18 found)
   3-Letter Words (32 found)
   6-Letter Words (4 found)
   7-Letter Words (2 found)
   8-Letter Words (1 found)