TRISECT is a playable word

trisect Scrabble® Dictionary

verb
trisected, trisecting, trisects
to divide into three equal parts
101 Playable Words can be made from "TRISECT"
   2-Letter Words (9 found)
   3-Letter Words (25 found)
   6-Letter Words (10 found)
   7-Letter Words (1 found)