mac·​ro·​nu·​tri·​ent | \-ˈnü-trē-ənt, -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

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 There are three types of macronutrients: proteins, fats and carbohydrates. Jason Lemon, ajc, "Should you avoid carbs? Here's what the science says," 25 Apr. 2018 To get the most out of your meals, think creatively and deliberately about the distribution of protein, along with the other macronutrients that round out the perfect plate, Sass says. Sara Angle, Outside Online, "Here's When You Should Eat Protein," 16 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

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1 Dec 2018

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Time Traveler for macronutrient

The first known use of macronutrient was in 1942

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mac·​ro·​nu·​tri·​ent | \-ˈn(y)ü-trē-ənt \

Medical Definition of macronutrient 

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

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a knickknack or trinket

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