di- means two. A detailed explanation is given below.
Explanation:
Adenosine diphosphate is an important organic compound in metabolism that is responsible for the flow of energy in all living cells.
ADP formed when one Phosphate group is reduced from ATP by breaking phosphoanhydride bond in hydrolysis process, energy is released and thus ATP is converted to ADP (Adenosine diphosphate)
The prefix di- means two which means that it has two phosphate groups in it.