noun \ˌā-ˌtē-ˈpē, ā-ˈtē-ˌpē\

Definition of ATP

: a phosphorylated nucleotide C10H16N5O13P3 composed of adenosine and three phosphate groups that supplies energy for many biochemical cellular processes by undergoing enzymatic hydrolysis especially to ADP—called also adenosine triphosphate

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