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micronutrientAny of the necessary minor components of a well-balanced diet, including vitamins and minerals, which are ingested either in relatively large amounts (thus known as macrominerals) or in minimal amounts (known as trace minerals).
micronutrientClinical nutrition A minor and necessary component of a balanced diet–eg, vitamins, minerals. See Diet. Cf Macronutrient, Minerals, Non-nutritive dietary component, Vitamins.
micronutrientany TRACE ELEMENT (e.g. zinc) or compound required in only minute amounts by organisms. Compare MACRONUTRIENT.
n an organic compound such as a vitamin, or a chemical element such as zinc or iodine, that is essential only in small amounts for the normal physiologic processes of the body.
a dietary element essential only in small quantities.