mudstone

noun

mud·​stone ˈməd-ˌstōn How to pronounce mudstone (audio)
: an indurated shale produced by the consolidation of mud

Examples of mudstone 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.
The crew found organic carbon inside two mudstones. — Chelsea Gohd, Space.com, 24 June 2026 The rover came across evidence of mudstones from ancient lakes as well as sandstone where moving water once trickled into the lakes. — Ashley Strickland, CNN Money, 24 Apr. 2026 The discovery of sulfur-rich organics followed in 2018, and just this year, more complex, long-chain alkanes were found in Martian mudstones. — Dirk Schulze-Makuch, Big Think, 17 Sep. 2025 The compounds, the largest ever found on Mars, were believed to be fragments of fatty acids preserved in ancient mudstone in the Gale Crater, NASA said. — Fernando Cervantes Jr, USA Today, 22 Apr. 2026 See All Example Sentences for mudstone

Word History

First Known Use

circa 1736, in the meaning defined above

Time Traveler
The first known use of mudstone was circa 1736

Rhymes for mudstone

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Browse Nearby Words

mud-star
mudstone
mudsucker
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Cite this Entry

“Mudstone.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mudstone. Accessed 7 Jul. 2026.

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More from Merriam-Webster on mudstone

Britannica.com: Encyclopedia article about mudstone

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