'ATP' originates from the combination of 'adenosine' and 'triphosphate', where 'adenosine' is a nucleoside and 'triphosphate' refers to the three phosphate groups attached.

'Adenosine triphosphate' was first identified in the early 20th century as a key energy carrier in biological systems.

Initially, it was identified as a molecule involved in energy transfer, and this meaning has remained consistent.