macronutrient

[mak-roh-noo-tree-uhnt, -nyoo-]

mac·ro·nu·tri·ent

[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
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Macronutrient has a plethora of syllables.
So is floccinaucinihilipilification. Does it mean:
a white, crystalline, water-insoluble, powerful high explosive, C3H6N6O6, used chiefly in bombs and shells.
the estimation of something as valueless (encountered mainly as an example of one of the longest words in the English language).
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
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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American Heritage
Medical Dictionary

macronutrient mac·ro·nu·tri·ent (māk'rō-n&oomacr;'trē-ənt, -ny&oomacr;'-)
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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