ISOMERISM Scrabble 13 Words With Friends 15 Scrabble letter values: I1S1O1M3E1R1I1S1M3 = 13 Definition noun the state of being an isomer. Examples “the complex of chemical and physical phenomena characteristic of isomers” See all 136 words you can make from ISOMERISM → 9-letter words Words starting with I Words ending with M ← Unscramble different letters