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

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The Asian version will take flight after the original contest takes place in Vienna in May, with 35 countries competing in the singing contest known for outrageous costumes, towering ballads and high-energy performances. Gil Kaufman, Billboard, 31 Mar. 2026 Reliably pulling off this high-energy yet delicate dance isn’t easy. Los Angeles Times, 31 Mar. 2026 From effortlessly cool Proenza Schouler to playful Tory Burch; from sparkling Prada to sultry lace Ulla Johnson, this dress code is all about matching the glittering lights of a high-energy metropolis after dark. Kerry Pieri, Vogue, 31 Mar. 2026 And the material also matters; what’s of most risk to astronauts is showers of high-energy protons and ions that can tear through metal and flesh alike, damaging DNA and other delicate cellular machinery. Meghan Bartels, Scientific American, 31 Mar. 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 6 Apr. 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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