dark energy

noun

: a hypothetical form of energy that produces a force that opposes gravity and is thought to be the cause of the accelerating expansion of the universe

Examples of dark energy in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Understanding the dynamics of as many galaxies as possible will help scientists decode the intricacies of dark matter and dark energy. — Monisha Ravisetti, Space.com, 29 July 2026 These large-scale surveys will help scientists understand how dark energy and dark matter have shaped the universe’s evolution. — Elijah Tan, Encyclopedia Britannica, 22 July 2026 General relativity is incompatible with quantum mechanics, despite our best efforts to reconcile the two, and does not explain dark energy. — Jacek Krywko, ArsTechnica, 10 July 2026 While the mission was designed with dark energy, dark matter, and exoplanets in mind, Roman’s unprecedented observational capability will offer practically limitless opportunities for astronomers to explore all kinds of cosmic topics. — Richard Tribou, The Orlando Sentinel, 9 July 2026 See All Example Sentences for dark energy

Word History

First Known Use

1998, in the meaning defined above

Time Traveler
The first known use of dark energy was in 1998

Rhymes for dark energy

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Browse Nearby Words

darkener
dark energy
darken someone's door/doors
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Cite this Entry

“Dark energy.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dark%20energy. Accessed 5 Aug. 2026.

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