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.
The Appalachian region—primarily the Marcellus and Utica shale plays in Pennsylvania, West Virginia, and Ohio—produces just over one-third of the nation’s gas with proximity to Virginia’s growing Data Center Alley. Andrew Nusca, Fortune, 11 Aug. 2025 In July, the Federal Trade Commission was said to be probing whether Hess and other US shale CEOs improperly communicated with OPEC officials about raising the price of oil, especially during the Covid-19 downturn. Orianna Rosa Royle, Fortune, 20 July 2025 Yet experts say the persistent steps to raise output are part of long-term efforts to crowd out US shale companies as well as to maintain adherence to national quotas within the grouping, all while addressing US President Donald Trump’s calls for lower oil prices. semafor.com, 8 July 2025 These selections showcase how Sauvignon Blanc adapts and thrives across diverse climates, both cool and warm, and soils—from the flinty terroirs of the Loire and Italy’s alpine foothills to Cape Town’s cool shale and California’s gravel beds. Joseph V Micallef, Forbes.com, 22 July 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 21 Aug. 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

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