PROENZYME Scrabble 25 Words With Friends 27 Definition noun any of a group of compounds that are inactive precursors of enzymes and require some change (such as the hydrolysis of a fragment that masks an active enzyme) to become active. — synonyms: zymogen See all 130 words you can make from PROENZYME → 9-letter words Words starting with P Words ending with E ← Unscramble different letters