high-energy

adjective

high-en·​er·​gy ˈhī-ˈe-nər-jē How to pronounce high-energy (audio)
1
a
: having such speed and kinetic energy as to exhibit relativistic departure from classical laws of motion
used especially of elementary particles whose velocity has been imparted by an accelerator
b
: of or relating to high-energy particles
2
: yielding a relatively large amount of energy when undergoing hydrolysis

Examples of high-energy in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Step into the spotlight with Styled by the Culture — a high-style, high-energy Amazon Live experience streaming straight from the vibrant SOKO MRKT stage at Essence Fest! Essence, 6 July 2025 As Zora, Johansson is at least high-energy, yet her spirited line deliveries don’t make up for her character’s almost distressing ignorance of the dangers around her. David Sims, The Atlantic, 4 July 2025 Unlike the familiar bolts that crack down from clouds to the ground, sprites shoot upward into the mesosphere, often appearing red or pink, due to the interaction of nitrogen molecules with high-energy electrons. Alice Gibbs, MSNBC Newsweek, 4 July 2025 New Kids on the Block stage high-energy Las Vegas residency with a nostalgic yet modern 30-song show. Sonal Dutt, People.com, 4 July 2025 See All Example Sentences for high-energy

Word History

First Known Use

1934, in the meaning defined at sense 1a

Time Traveler
The first known use of high-energy was in 1934

Browse Nearby Words

Cite this Entry

“High-energy.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/high-energy. Accessed 20 Jul. 2025.

Medical Definition

high-energy

adjective
: yielding a relatively large amount of energy when undergoing hydrolysis
high-energy phosphate bonds in ATP
Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!