GEOID is a playable word

geoid Scrabble® Dictionary

noun
pl. geoids
a hypothetical surface of the earth
(adjective) geoidal
23 Playable Words can be made from "GEOID"
   2-Letter Words (9 found)
   3-Letter Words (10 found)
   4-Letter Words (2 found)
   5-Letter Words (2 found)