adenosine triphosphate: a nucleotide in living cells that is the source of chemical energy for biological processes. A bond between two of its three component phosphate groups is easily split by a particular enzyme, ATPase (adenosine triphosphatase), yielding energy when a cell requires it.
Sorry, "unified-tri-service-cognitive-performance-assessment-battery-utcpab" is not in the Dictionary of Psychology. Please report to APA if you believe this is an error.