ACTINOMETRY Scrabble 18 Words With Friends 20 Scrabble letter values: A1C3T1I1N1O1M3E1T1R1Y4 = 18 Definition noun measuring the intensity of electromagnetic radiation (especially of the sun's rays). See all 767 words you can make from ACTINOMETRY → 11-letter words Words starting with A Words ending with Y ← Unscramble different letters