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

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Miller said his dad used to sit in his firehouse, clipping newspaper stories on dark matter and black holes to send to his son. Lisa Song, CNN Money, 28 July 2026 The telescope will gather data on how dark energy and dark matter have influenced galaxies over billions of years by tracking the movement and clustering of galaxies over various phases in the universe’s history. Elijah Tan, Encyclopedia Britannica, 22 July 2026 Two major mysteries in science, the nature of dark matter and the possible existence of higher dimensions, could be linked, new research suggests. Robert Lea, Space.com, 16 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 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 4 Aug. 2026.

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