beta-hydroxybutyric acid: beta derivative of hydroxybutyric acid that is found in the blood and urine in some cases of impaired metabolism
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
choppiness: used of the sea during inclement or stormy weather