macronutrient

American  

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

noun

1. Nutrition. any of the nutritional components of the diet that are required in relatively large amounts: protein, carbohydrate, fat, and the macrominerals.

2. Botany. any of the three chemical elements required by plants in relatively large amounts: nitrogen, phosphorus, and potassium.

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macronutrient British  

/ ˌmækrəʊˈnjuːtrɪənt /

noun

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

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Etymology

Origin of macronutrient

First recorded in 1940–45; macro- + nutrient