cosmic dust

noun

: very fine particles of solid matter found in any part of the universe

Examples of cosmic dust 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.
Glowing gas and dust NGC 2264 contains vast clouds of hydrogen gas mixed with thick cosmic dust. — Aamir Khollam, Interesting Engineering, 25 Dec. 2025 Meanwhile, the infrared components illustrate the explosion’s growing shell filled with cosmic dust. — Andrew Paul, Popular Science, 2 July 2026 Interstellar space contains a sparse smattering of hydrogen atoms and microscopic grains of cosmic dust. — Kai James, The Conversation, 26 May 2026 The team says its synthetic universe is the first large volume simulation to model cold gases and cosmic dust inside galaxies, the free-floating material that coalesces to form stars. — Frank Landymore, Futurism, 23 Apr. 2026 See All Example Sentences for cosmic dust

Word History

First Known Use

1881, in the meaning defined above

Time Traveler
The first known use of cosmic dust was in 1881

Rhymes for cosmic dust

See All Rhymes for cosmic dust

Browse Nearby Words

cosmic background radiation
cosmic dust
cosmic microwave background
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Cite this Entry

“Cosmic dust.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cosmic%20dust. Accessed 7 Jul. 2026.

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Kids Definition

cosmic dust

noun
: very fine particles of solid matter found in any part of the universe
Last Updated: - Updated example sentences
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