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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To that end, events for the film and TV festival will be much more centralized around the signature venue of the Paramount Theatre, home to many high-energy premieres, and a clubhouse lounge for attendees across the street. Los Angeles Times, 12 Mar. 2026 The outer belt is made up of billions of high-energy particles that originate from the sun, whereas the inner belt results from interactions of cosmic rays with Earth’s atmosphere. Eric Lagatta, USA Today, 10 Mar. 2026 The pair was designed to fly through and study rings of high-energy radiation particles that are trapped by Earth’s magnetic field. Denise Chow, NBC news, 10 Mar. 2026 That’s why during a visit to The Jennifer Hudson Show on Tuesday morning (March 10) the Masked Singer judge could not have more positive things to say about his small, but pivotal role as Bobby, the high-energy manager of fictional K-pop girl group Huntrix in the Netflix megahit KPop Demon Hunters. Gil Kaufman, Billboard, 10 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 13 Mar. 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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