BIREFRINGENT Scrabble 18 Words With Friends 22 Scrabble letter values: B3I1R1E1F4R1I1N1G2E1N1T1 = 18 Definition adjective relating to or characterized by double refraction. See all 298 words you can make from BIREFRINGENT → 12-letter words Words starting with B Words ending with T ← Unscramble different letters