Also found in: Medical, Encyclopedia, Wikipedia.


 (măk′rō-no͞o′trē-ənt, -nyo͞o′-)
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


(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.


- 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.
References in periodicals archive ?
TABLE 2--Leaf macronutrient content (mg plant-1) of mangabeira seedlings (Hancornia speciosa Gomes) grown in a complete nutrient solution or in macronutrient-deficient solutions.
The more you know about the macronutrient breakdown of your food, the more likely you are to watch what you eat and make healthy choices.
"There is already agreement that reducing saturated fat lowers risk of heart disease, but the question of which macronutrient to emphasize has been controversial," states Lawrence Appel, M.D., M.P.H., professor of medicine at the Johns Hopkins School of Medicine and lead author of the OmniHeart study, in a press release prior to the study's publication.
The draft guidelines advise long-term vitamin and mineral supplementation as needed, depending on the procedure, and periodic monitoring for micronutrient deficiencies in the first 2-3 weeks after surgery and for macronutrient deficiencies in the first several months.
Sixty healthy postmenopausal women were randomly assigned in a crossover design to consume a low-fat diet or a diet of similar macronutrient content in which one-half cup per day of unsalted soy nuts (providing 25 g of soy protein and 101 mg of isoflavones daily) replaced 25 g of non-soy protein.
There may be some differences in water loss on a low-carb diet and there may be a difference in compliance, but the bottom line is that a calorie is a calorie regardless of the macronutrient consumed.
GMA based its recommendation on the National Academy of Sciences' Macronutrient Report as well as FDA precedent for other nutrient content claims including "low fat," "reduced sodium", and "good source of calcium".
Although protein provides amino acids for promoting muscle growth and recovery from strength training, the most important macronutrient for strength building is carbohydrate.
Children's patterns of macronutrient intake and associations with restaurant and home eating.
Chapter titles: Introduction to Principles and Practice of Mass Spectrometry; Interpretation of Organic Mass Spectrometric Data; Food Flavourings and Taints; Bioactive Nonnutrients in Foods; Amino Acids, Peptides and Proteins; Lipids; Sugars and Carbohydrates; Quantification and Metabolism of Inorganic Nutrients; Analysis and Metabolism of Vitamins in Foods; Stable Isotope Studies of Organic Macronutrient Metabolism; Pyrolysis Mass Spectrometry of Foods; Followed by a Subject Index.
Hall's research involved monitoring 17 healthy adult dogs and 27 cats over 28 days and used four types of food that were designed to taste equally good; with flavor out of the equation, the animals could make macronutrient choices based only on what their bodies were telling them they needed.
The researchers found that the mean 12-month macronutrient distributions were 48 versus 30 percent for carbohydrates, 29 versus 45 percent for fat, and 21 versus 23 percent for protein in the HLF versus HLC diets.