PHOTOCHEMISTRY Scrabble 29 Words With Friends 29 Scrabble letter values: P3H4O1T1O1C3H4E1M3I1S1T1R1Y4 = 29 Definition noun branch of chemistry that deals with the chemical action of light. See all 1521 words you can make from PHOTOCHEMISTRY → 14-letter words Words starting with P Words ending with Y ← Unscramble different letters