Appalachian
Americanadjective
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of or relating to the Appalachian Mountains.
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of or relating to the region of Appalachia, its inhabitants, or their culture.
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Geology. of or relating to the orogeny and accompanying intrusion that occurred in eastern North America during the Pennsylvanian and Permian periods.
noun
Etymology
Origin of Appalachian
First recorded in 1670–80; from Spanish Apalchen, Apalachen, perhaps from Apalachee (an extinct Muskogean language) abalahci “other side of the river” or from Hitchiti (an extinct Muskogean language) apalwahči “dwelling on one side”; the Spanish transcription of the name of a Muskogean village near Tallahassee in the Florida panhandle, recorded on the expedition led by Pánfilo de Narváez (1478?–1528), later altered by the Spanish to Apalachee and applied to the Indian tribe, the surrounding area and the hinterland north to the southern end of the Appalachian Mountains
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
National Fuel Gas owns roughly 1.2 million acres in the Appalachian Basin, with substantial mineral ownership overlying the Marcellus and Utica shales.
From Barron's • Jan. 23, 2026
At the same time, “freeze-offs,” which refer to a slowdown in production caused by the cold weather and ice, can reduce output across the Appalachian, Bakken, South Central and Permian regions, he said.
From MarketWatch • Jan. 22, 2026
When the BBC visited in November, workers were busy knocking down a decrepit old barn, one of many that dot the Appalachian landscape.
From BBC • Dec. 29, 2025
This goes far beyond the typical Appalachian tragedies people are used to ignoring.
From Salon • Dec. 28, 2025
Greylock is certainly the most literary of Appalachian mountains.
From "A Walk in the Woods" by Bill Bryson
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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.