high-en·​er·​gy ˈhī-ˈe-nər-jē How to pronounce high-energy (audio)
: 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
: of or relating to high-energy particles
: yielding a relatively large amount of energy when undergoing hydrolysis

Examples of high-energy in a Sentence

Recent Examples on the Web Such devices are used in particle accelerators at CERN, for instance, in high-energy particle detection applications where other materials degrade quickly. Tim Barber, WIRED, 27 Nov. 2023 For the high-energy performance, the iconic signer wore a version of the Cowboys' cheerleader uniform, featuring a white vest with blue stars, a chest-baring blue crop top, and white shorts. Jack Irvin, Peoplemag, 24 Nov. 2023 Find it on Amazon The Perfect Ball Toy To Keep An Energetic Dog Happy These rubber balls are such a durable design and perfect for the most high-energy of dogs. Samantha Booth, Rolling Stone, 16 Nov. 2023 One paper posted in July uses them to construct solutions to a system of differential equations used to model everything from predator-prey interactions to waves traveling in high-energy plasmas. Alex Stone, Quanta Magazine, 16 Nov. 2023 For example, a year or two of exposure to space radiation, or high-energy particles from the sun and galactic cosmic rays, could threaten astronauts with cancer. WIRED, 8 Nov. 2023 The simulations showed that the high-energy crash would have melted the upper part of Earth’s mantle, allowing Theia’s dense remnants to get pulled through the molten top layer and settle in the more solid bottom, per Nature News. Will Sullivan, Smithsonian Magazine, 3 Nov. 2023 Arrived at the office six minutes late and hungry. DAY 2: Adena Friedman, Nasdaq chair and chief executive Workout Wake up Breakfast Office Adena Friedman starts most days with up to one hour on the Peloton listening to high-energy pop music. Ray A. Smith, WSJ, 26 Oct. 2023 With trillion electron-volt electrons, high-energy colliders become possible, Hommelhoff says. IEEE Spectrum, 24 Oct. 2023 See More

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'high-energy.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

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

Dictionary Entries Near high-energy

Cite this Entry

“High-energy.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/high-energy. Accessed 11 Dec. 2023.

Medical Definition


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