energy

noun
en·​er·​gy | \ˈe-nər-jē \
plural energies

Definition of energy 

1a : dynamic quality narrative energy

b : the capacity of acting or being active intellectual energy

c : a usually positive spiritual force the energy flowing through all people

2 : vigorous exertion of power : effort investing time and energy

3 : a fundamental entity of nature that is transferred between parts of a system in the production of physical change within the system and usually regarded as the capacity for doing work

4 : usable power (such as heat or electricity) also : the resources for producing such power

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Choose the Right Synonym for energy

power, force, energy, strength, might mean the ability to exert effort. power may imply latent or exerted physical, mental, or spiritual ability to act or be acted upon. the awesome power of flowing water force implies the actual effective exercise of power. used enough force to push the door open energy applies to power expended or capable of being transformed into work. a worker with boundless energy strength applies to the quality or property of a person or thing that makes possible the exertion of force or the withstanding of strain, pressure, or attack. use weight training to build your strength might implies great or overwhelming power or strength. the belief that might makes right

Examples of energy in a Sentence

The kids are always so full of energy. They devoted all their energy to the completion of the project. They devoted all their energies to the completion of the project. She puts a lot of energy into her work. The newer appliances conserve more energy.
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Recent Examples on the Web

The introduction of Anu (played by Rati Gupta) has been an energy shot the show needed going into its final season. Jessica Radloff, Glamour, "The Big Bang Theory," 8 Nov. 2018 Currently, Arizona is targeting 15 percent renewable energy on its grid by 2025, so this new proposition would be significantly more aggressive. Megan Geuss, Ars Technica, "States will vote on these energy and environment issues in midterm elections," 4 Nov. 2018 Embrace this lunar energy, because the very next day, a radical shift occurs in the sky. Aliza Kelly Faragher, Allure, "What November's Capricorn Horoscope Means for You," 28 Oct. 2018 Every second, the sun converts about 4 million tons of matter into energy. Tim Folger, Discover Magazine, "How Quantum Mechanics Lets Us See, Smell and Touch," 24 Oct. 2018 Fifteen years may have passed since the premiere of their first Bravo show, but the decades-long besties haven’t lost an ounce of flair or energy. Lucia Tonelli, ELLE Decor, "The Original 'Queer Eye' Stars Reunite For TV's Most Stylish Home Makeover Show," 19 Oct. 2018 According to the American Heart Association, getting too many calories from protein, which is usually the case for those eating low-carb, can result in not enough insulin in the body, and that forces us to start burning energy from our fat stores. Samantha Lefave, Redbook, "Why You Should Never Ignore Sweet-Smelling Urine (or These Other Body Odors)," 3 Aug. 2018 The areas of manufacturing will include new-energy vehicles, computer, communication and consumer electronics and household products, as well as commodities like silicon metal and coal, according to Wu. Rebecca Lurye, courant.com, "How Seven Stars Cloud Plans To Spend $283M In West Hartford," 14 July 2018 Media: Wochit Exxon's departure comes amid a corporate exodus by the likes of Ford Motor Co. and Expedia Group Inc. departed, largely in response to ALEC's positions on climate rules, renewable energy and other issues. Kevin Crowley And Ari Natter, Houston Chronicle, "Exxon quits Koch-backed business group after climate change disagreement," 13 July 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'energy.' 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 energy

1599, in the meaning defined at sense 1a

History and Etymology for energy

Late Latin energia, from Greek energeia activity, from energos active, from en in + ergon work — more at work

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Learn More about energy

Statistics for energy

Last Updated

14 Nov 2018

Look-up Popularity

Time Traveler for energy

The first known use of energy was in 1599

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More Definitions for energy

energy

noun

English Language Learners Definition of energy

: ability to be active : the physical or mental strength that allows you to do things

: natural enthusiasm and effort

: usable power that comes from heat, electricity, etc.

energy

noun
en·​er·​gy | \ˈe-nər-jē \
plural energies

Kids Definition of energy

1 : ability to be active : strength of body or mind to do things or to work The children … were tired and hardly had energy enough to walk.— E. B. White, Charlotte's Web

2 : strong action or effort He puts a lot of energy into his work.

3 : usable power or the resources (as oil) used to produce usable power Our new dryer uses a lot less energy.

energy

noun
en·​er·​gy | \ˈen-ər-jē \
plural energies

Medical Definition of energy 

2 : the capacity for doing work

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More from Merriam-Webster on energy

Thesaurus: All synonyms and antonyms for energy

Spanish Central: Translation of energy

Nglish: Translation of energy for Spanish Speakers

Britannica English: Translation of energy for Arabic Speakers

Comments on energy

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