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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Bernet says scientists could measure dark matter in the Milky Way’s disk. Stephen Clark – Jun 6, ArsTechnica, 6 June 2025 And in the voids, there simply isn't enough density of dark matter, so nothing really lights up. Paul Sutter, Space.com, 6 June 2025 So, these direct dark matter detections will not succeed based on this study. Steven Strogatz, Quanta Magazine, 29 May 2025 This dwarf galaxy merged with the Milky Way around 10 billion years ago, added at least eight globular clusters and some 50 billion solar masses' worth of stars, gas and dark matter. Ron Estes, MSNBC Newsweek, 31 Mar. 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 10 Jun. 2025.

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