shale

noun

: a fissile rock that is formed by the consolidation of clay, mud, or silt, has a finely stratified or laminated structure, and is composed of minerals essentially unaltered since deposition
shaley adjective
or less commonly shaly

Examples of shale 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.
Faced this time with the reality that all of the big U.S. shale plays have now moved into the development and maintenance phase of their lifespans, Trump and his senior officials understand there can be no repeat of that first-term focus. David Blackmon, Forbes.com, 18 May 2025 The president’s preferred price based on his social media posts would hurt the U.S. shale industry . Spencer Kimball, CNBC, 14 May 2025 At first, Bennett and study coauthor Dr. Nicholas A. Famoso — the head paleontologist and museum curator at John Day — thought they could be caused by raindrops, which can leave impressions in the fine grains of shale and clay the tracks were found in. Amanda Schupak, CNN Money, 25 Apr. 2025 Domestic production is over 13 million barrels per day, with shale making up 70% of the total. Dan Eberhart, Forbes.com, 25 Apr. 2025 See All Example Sentences for shale

Word History

Etymology

probably from obsolete or dialect shale scale, shell, from Middle English, from Old English scealu — more at shell

First Known Use

1747, in the meaning defined above

Time Traveler
The first known use of shale was in 1747

Browse Nearby Words

Cite this Entry

“Shale.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/shale. Accessed 3 Jun. 2025.

Kids Definition

shale

noun
: a rock with a fine grain formed from clay, mud, or silt
shaley adjective

More from Merriam-Webster on shale

Last Updated: - Updated example sentences
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