Vitamin

Definition

Vitamins are organic compounds that are essential in small amounts for the proper functioning and health of living organisms, including humans. They cannot be synthesized in sufficient quantities by an organism, and therefore must be obtained from the diet.

Related terms

Coenzyme: A non-protein compound that is necessary for the functioning of an enzyme.

Micronutrient: A nutrient required by organisms in small quantities throughout life to orchestrate a range of physiological functions.

Essential nutrient: A nutrient that must be obtained from the diet because the body cannot produce it in sufficient quantity to meet its needs