silt·​stone ˈsilt-ˌstōn How to pronounce siltstone (audio)
: a rock composed chiefly of silt hardened by heat, pressure, or cementation

Example Sentences

Recent Examples on the Web The crocodile sample, which was initially preserved in a siltstone mass, had been partially crushed. Sana Noor Haq, CNN, 14 Feb. 2022 The reddish-brown siltstone, orange sandstone, and green clay stone are eroded into intricate swirls, icicles, cones, and rounded rec rooms. John Phillips, Car and Driver, 24 Mar. 2020

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'siltstone.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

circa 1920, in the meaning defined above

Time Traveler
The first known use of siltstone was circa 1920

Dictionary Entries Near siltstone

Cite this Entry

“Siltstone.” Dictionary, Merriam-Webster, Accessed 31 May. 2023.

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