PORISM is a playable word

porism Scrabble® Dictionary

noun
pl. porisms
a type of mathematical proposition
64 Playable Words can be made from "PORISM"
   2-Letter Words (12 found)
   3-Letter Words (26 found)
   4-Letter Words (17 found)
   5-Letter Words (6 found)
   6-Letter Words (3 found)