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
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The high-energy track is aggressive yet playful and makes expert use of an electric guitar sample, an instrument not heard frequently in the Memphis producer’s collection. Demicia Inman, VIBE.com, 20 June 2026 Today, between 40 and 50 women from communities that also include Oswego, Montgomery and Plainfield gather every Saturday, not just for the high-energy exercise but for the fellowship and the service that often extends beyond these meetings. Denise Crosby, Chicago Tribune, 19 June 2026 After exposing the bones to a high-energy blue light, the team used an optical filter to see which of them glowed red. Sahas Mehra, Scientific American, 19 June 2026 Like a high-energy, party atmosphere? Scott Laird, Forbes.com, 19 June 2026 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

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Cite this Entry

“High-energy.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/high-energy. Accessed 26 Jun. 2026.

Medical Definition

high-energy

adjective
: yielding a relatively large amount of energy when undergoing hydrolysis
high-energy phosphate bonds in ATP
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