macronutrient

[ mak-roh-noo-tree-uh nt, -nyoo- ]
/ ˌmæk roʊˈnu tri ənt, -ˈnyu- /

noun

Nutrition. any of the nutritional components of the diet that are required in relatively large amounts: protein, carbohydrate, fat, and the macrominerals.
Botany. any of the three chemical elements required by plants in relatively large amounts: nitrogen, phosphorus, and potassium.
Compare micronutrient.

Origin of macronutrient

First recorded in 1940–45; macro- + nutrient

British Dictionary definitions for macronutrient

macronutrient
/ (ˌmækrəʊˈnjuːtrɪənt) /

noun

any substance, such as carbon, hydrogen, or oxygen, that is required in large amounts for healthy growth and development

Medical definitions for macronutrient

macronutrient
[ măk′rō-nōōtrē-ənt ]

n.

A nutrient required in large amounts for the normal growth and development of an organism.