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A substance required in relatively large amounts for the normal growth and development of an organism. Macronutrients for animals include fat, carbohydrate, and protein, while for most plants they include chemical elements such as carbon, hydrogen, oxygen, nitrogen, and phosphorus.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Biochemistry) any substance, such as carbon, hydrogen, or oxygen, that is required in large amounts for healthy growth and development
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
mac•ro•nu•tri•ent(ˌmæk roʊˈnu tri ənt, -ˈnyu-)
1. any of the nutritional components required in relatively large amounts: protein, carbohydrate, fat, and the essential minerals.
2. any of the chemical elements required by plants in relatively large amounts: nitrogen, phosphorus, and potassium.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
macronutrient- One required in relatively large amounts by organisms, e.g. carbohydrates, fats, and proteins.
See also related terms for organism.
Farlex Trivia Dictionary. © 2012 Farlex, Inc. All rights reserved.