TRIGONOMETRIC Scrabble 18 Words With Friends 22 Scrabble letter values: T1R1I1G2O1N1O1M3E1T1R1I1C3 = 18 Definition adjective of or relating to or according to the principles of trigonometry. Examples “trigonometric function” See all 565 words you can make from TRIGONOMETRIC → 13-letter words Words starting with T Words ending with C ← Unscramble different letters