(biochem) any chemical element required by an organism for healthy growth. It may be required in large amounts (macronutrient) or in very small amounts (trace element) See also macronutrient, trace element
- Essential fatty acid
noun 1. (biochem) any fatty acid required by the body in manufacturing prostaglandins, found in such foods as oily fish and nuts EFA
- Essential fructosuria
essential fructosuria n. A benign inherited metabolic disorder caused by a deficiency of fructokinase and characterized by the presence of fructose in the blood and urine.
- Essential hematuria
essential hematuria n. Hematuria whose cause has not been determined.
noun, Pathology. 1. persistent high blood pressure of no known cause. essential hypertension n. Hypertension without known cause or preexisting renal disease.