Definition of macronutrient
: a chemical element or substance (such as potassium or protein) that is essential in relatively large amounts to the growth and health of a living organism — compare micronutrient
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1942
First Known Use of macronutrient
1942
Medical Dictionary
macronutrient
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noun
mac·ro·nu·tri·ent
\-ˈn(y)ü-trē-ənt\
Medical Definition of macronutrient
: a substance (as a protein, carbohydrate, or fat) required in relatively large quantities for growth, energy, and health—compare micronutrient
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Britannica.com: Encyclopedia article about macronutrient
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