Monounsaturated fat. Definition. noun, plural: monounsaturated fats. An unsaturated fatty acid that contains only one double or triple bond in the carbon chain, and believed to be a dietary fat that helps reduce LDL cholesterol in blood. Supplement. Foods rich in monounsaturated fats are almonds, peanut oil, olive oil, canola, and avocados.
acetone body, ketone body - a ketone that is an intermediate product of the breakdown of fats in the body; any of three compounds (acetoacetic acid, acetone, and/or beta-hydroxybutyric acid) found in excess in blood and urine of persons with metabolic disorders.
Ketone, a source of energy in heart, brain. Ketones are produced in the body when fats, rather than glucose, are used to produce energy. This substance is an acid which can be harmful to the body if ketones are allowed to accumulate.