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 standard method for identifying when an SPE occurred is measuring carbon-14, produced when high-energy photos penetrate the Earth’s magnetic field (usually near the poles) and collide with gases in the atmosphere. ArsTechnica, 2 May 2026 Radio telescopes detect low-energy radio waves, rather than high-energy visible light or heat that can destroy the optical components of telescopes such as the James Webb Space Telescope. Ashley Strickland, CNN Money, 1 May 2026 On another, a shamisen and geisha performance by Asakusa Geisha segued to Japanese high-energy house sets by Tokyo music scene icons, ​​TOWA TEI and Yuka Mizuhara (with a pop-up ramen bar to fuel the fun). Terry Ward, Robb Report, 30 Apr. 2026 Researchers in China have developed a new catalyst that helped a lithium-sulfur battery retain 93 percent of its capacity after 600 charge-discharge cycles, a step that could address one of the biggest barriers to commercializing the high-energy battery chemistry. Neetika Walter, Interesting Engineering, 29 Apr. 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 4 May. 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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