SUPERSTRING Scrabble 14 Words With Friends 18 Definition noun a hypothetical particle that is the elementary particle in a theory of space-time. Examples “Given the superstring "cathode", we can extract the substrings "cat", "hod", and "ode".” See all 753 words you can make from SUPERSTRING → 11-letter words Words starting with S Words ending with G ← Unscramble different letters