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
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This means that, today, dark energy dominates the Universe, while dark matter and normal matter play a sub-dominant role. Ethan Siegel, Big Think, 3 Oct. 2025 The impact of dynamical dark energy The team’s results showed that DDE by itself has a minimal impact on cosmic structure. Chris Young, Interesting Engineering, 3 Oct. 2025 The team is particularly excited to study the mystery of dark energy, the force driving the expansion of the universe. Stefanie Waldek, Space.com, 26 Sep. 2025 There was all sort of bizarre things going on, and there were lots of observations in cosmology that were beginning to support the idea of inflation, dark energy, and so forth. Quanta Magazine, 24 July 2025 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

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Cite this Entry

“Dark energy.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dark%20energy. Accessed 9 Oct. 2025.

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