What does macronutrient mean?
A macronutrient is a substance the body needs in relatively large amounts for energy, growth, repair, or other essential functions. The principal macronutrients are carbohydrates, proteins, and fats, although the term may also include certain vitamins and minerals that are required in comparatively larger quantities. The word is especially common in nutrition and health discussions, where it contrasts with a micronutrient, a nutrient needed only in trace amounts. Saying that a food provides a good balance of macronutrients generally means that it contains appropriate proportions of the major sources of energy and structural materials. Understanding the term helps distinguish nutrients by the quantity the body requires rather than by their chemical category alone, making it useful when evaluating diets, sports nutrition, and public-health advice.
nounA nutrient that the human body requires in relatively large amounts, such as protein, fat, carbohydrate, and certain vitamins or minerals. Macronutrients provide energy or support essential bodily functions.
- A nutrient required by the body in relatively large amounts, including proteins, fats, carbohydrates, and some vitamins and minerals.
"A balanced diet should provide adequate amounts of every essential macronutrient."
"Protein is an essential macronutrient for repairing and building body tissues."
"Athletes often adjust their macronutrient intake to match the demands of training."
Used when referring to multiple nutrients required in relatively large amounts.
"Whole grains provide complex carbohydrates and other macronutrients."
Macronutrients are the nutritional heavyweights: the body needs them in amounts large enough to fuel daily life and maintain its basic machinery.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does macronutrient come from?
Macronutrient combines the combining form macro-, derived from Greek makros, meaning “large,” with nutrient. The element nutrient comes through Latin nutrire, “to feed” or “to nourish,” and ultimately from the same Indo-European root associated with being born or nurtured. The compound thus literally refers to a nutrient needed in a large quantity.
Related word forms
How macronutrient is actually used
The term is primarily used in nutrition, biology, and health contexts. It is usually contrasted with micronutrients, which are needed in much smaller amounts.
Easily confused with macronutrient
A macronutrient is needed in relatively large amounts, whereas a micronutrient is required only in very small quantities.