MERCAPTOPURINE Scrabble 22 Words With Friends 28 Definition noun a drug (trade name Purinethol) that interferes with the metabolism of purine and is used to treat acute lymphocytic leukemia. — synonyms: Purinethol See all 1781 words you can make from MERCAPTOPURINE → 14-letter words Words starting with M Words ending with E ← Unscramble different letters