dark matter

noun

: nonluminous matter not yet directly detected by astronomers that is hypothesized to exist to account for various observed gravitational effects

Examples of dark matter in a Sentence

Recent Examples on the Web
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And the more dark matter that dark dwarfs accumulate, the more energy these darkside stars would radiate. Robert Lea, Space.com, 7 July 2025 Named for famed astronomer Vera Rubin, best known for discovering evidence of dark matter, the observatory will spend the next 10 years observing and collecting data on the southern night sky in our Milky Way and beyond. Eric Lagatta, USA Today, 25 June 2025 With the entire dataset open to the public, the team hopes the fresh eyes, as well as graduate and undergraduate astronomers, will uncover something new and unlock clues about cosmic mysteries like dark matter and the physics of the early universe. Jay Kakade june 22, New Atlas, 22 June 2025 According to Aguilera, the mathematical universe, like our physical one, may be made up mostly of dark matter. Gregory Barber, Quanta Magazine, 20 June 2025 See All Example Sentences for dark matter

Word History

First Known Use

1933, in the meaning defined above

Time Traveler
The first known use of dark matter was in 1933

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Cite this Entry

“Dark matter.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dark%20matter. Accessed 21 Jul. 2025.

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