mac·​ro·​nu·​tri·​ent | \ ˌma-krō-ˈnü-trē-ənt How to pronounce macronutrient (audio) , -ˈnyü-\

Definition of macronutrient

: a chemical element or substance (such as potassium or protein) that is essential in relatively large amounts to the growth and health of a living organism — compare micronutrient

Examples of macronutrient in a Sentence

Recent Examples on the Web

While carbs and fat get alternately praised and punished, protein is basically the golden child among the macronutrients. Carolyn L. Todd, SELF, "Here's What Actually Happens in Your Body When You Eat Protein," 20 June 2019 Adherents strive to keep their bodies in ketosis by eating a specific balance of macronutrients, or macros, made up of mostly fats, some protein, and very few carbs. Jamie Lauren Keiles, Vox, "How low-fat dairy came to rule the US — and why that’s changing.," 20 Dec. 2018 To put it simply, macronutrients are the big, main nutrients — protein, fat, and carbohydrates — that are essential to keeping our bodies moving. Colleen Stinchcombe, Redbook, "What Are Macros, Exactly?," 27 Aug. 2018 Different macronutrient ratios may affect different people in different ways. Abby Langer, SELF, "I'm a Registered Dietitian and I Really Don't Want You to Eat a Carnivore Diet," 7 Aug. 2018 Or any other ratio of macronutrients, the umbrella term for carbs, protein and fat. Cara Rosenbloom,, "Ignore calories and BMI. Here are the health numbers that really matter.," 9 July 2018 Foods like these, rich in both macronutrients, send strong signals to your brain’s reward system, priming you to overeat. Samantha Cassetty, NBC News, "How to make your fast food habit healthier," 20 June 2018 And some of us may do better on certain ratios of macronutrients—more or fewer carbs, more or fewer fats. Abby Langer, SELF, "I’ve Been a Dietitian for Almost 20 Years. These Are the 5 Most Important Healthy Eating Lessons I’ve Learned," 3 June 2018 Alcohol is metabolized differently than other macronutrients. Kimberly Mugler,, "Dos and donts of drinking alcohol on paleo, keto diets," 26 May 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'macronutrient.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of macronutrient

1942, in the meaning defined at sense 1

History and Etymology for macronutrient

macro- + nutrient entry 2

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Last Updated

14 Jul 2019

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Time Traveler for macronutrient

The first known use of macronutrient was in 1942

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More Definitions for macronutrient


mac·​ro·​nu·​tri·​ent | \ -ˈn(y)ü-trē-ənt How to pronounce macronutrient (audio) \

Medical Definition of macronutrient

: a substance (as a protein, carbohydrate, or fat) required in relatively large quantities for growth, energy, and health — compare micronutrient

More from Merriam-Webster on macronutrient Encyclopedia article about macronutrient

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