Noun
1. A compound, C25H38N7O17P3S, that functions as a coenzyme in many biological acetylation reactions and is formed as an intermediate in the oxidation of carbohydrates, fats, and proteins. Also called acetyl-coA. (www.thefreedictionary.com)
2. An important molecule in metabolism, used in many biochemical reactions. Its main function is to convey the carbon atoms within the acetyl group to the citric acid cycle (Krebs cycle) to be oxidized for energy production. (Wikipedia.org)
3. Acetyl CoA participates in the biosynthesis of fatty Acids and sterols, in the oxidation of fatty acids and in the metabolism of many amino acids. It also acts as a biological acetylating agent. (online-medical-dictionary.org)