THECA is a playable word

theca Scrabble® Dictionary

noun
pl. thecae
a protective anatomical covering
(adjective) thecal, thecate
42 Playable Words can be made from "THECA"
   2-Letter Words (9 found)
   3-Letter Words (14 found)
   4-Letter Words (15 found)
   5-Letter Words (4 found)