Definition: Ureosecretory is a scientific term used in biochemistry and pharmacology, specifically to describe a type of enzyme that catalyzes the conversion of urea (a nitrogenous waste product) into ammonia (a potent antitumor agent). This process occurs in the liver, where it is part of the urease pathway. Urease is an enzyme involved in the breakdown of amino acids and other organic compounds to generate energy and nitrogen.