HYDROID is a playable word

hydroid Scrabble® Dictionary

noun
pl. hydroids
a polyp
33 Playable Words can be made from "HYDROID"
   2-Letter Words (10 found)
   3-Letter Words (12 found)
   4-Letter Words (6 found)
   5-Letter Words (3 found)
   6-Letter Words (1 found)
   7-Letter Words (1 found)