In chemistry, a ketone is a functional group with the structure R2C=O, where R can be a variety of carbon-containing substituents. Ketones contain a carbonyl group (a carbon-oxygen double bond). (https://en.wikipedia.org/wiki/Ketone)
Acetonemia (or ketosis): a condition characterized by an elevated concentration of ketone bodies in body tissues and fluids. It is more common among high-producing animals in a negative energy balance. (https://www.fao.org/dairy-production-products/resources/glossary/en/?index=a)