macro-nutrients'

macronutrient

[mak-roh-noo-tree-uhnt, -nyoo-]
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.
Compare micronutrient.


Origin:
1940–45; macro- + nutrient

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Collins
World English Dictionary
macronutrient (ˌmækrəʊˈnjuːtrɪənt)
 
n
any substance, such as carbon, hydrogen, or oxygen, that is required in large amounts for healthy growth and development

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

macronutrient mac·ro·nu·tri·ent (māk'rō-nōō'trē-ənt, -nyōō'-)
n.
A nutrient required in large amounts for the normal growth and development of an organism.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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