Adenosine triphosphate (ATP)
Adenosine triphosphate, or ATP, is a molecule that carries energy within cells. It is often referred to as the "energy currency" of the cell because it provides the energy necessary for various cellular processes. ATP is a nucleotide, which is a basic structural unit of nucleic acids like DNA and RNA.
Unit 2,
Reference: Oxford Concise Colour Medical Dictionary (7th Edition, Kindle Edition) Oxford University Press 2020 ISBN-13: 978-0198836629, p1005