Meaning of ATP
- adenosine triphosphate: an ester of adenosine and triphosphoric acid, CHNOHPO, formed esp. aerobically by the reaction of ADP and an orthophosphate during oxidation, or by the interaction of ADP and phosphocreatine or certain other substrates, and serving as a source of energy for physiological reactions, esp. muscle contraction.
- atp (Thesaurus)