Alleghenian

adjective

Al·​le·​ghe·​ni·​an
variants or less commonly Alleghanian
¦alə¦gānēən
-nyən
-¦gen-
1
or Alleganian or Alleghanian : of or relating to the Allegheny Mountains or the region where they are situated
2
: relating to or constituting the humid division of the biogeographic Transition zone that extends across the northern U.S. from New England to eastern North and South Dakota and includes also most of Pennsylvania and the mountainous region as far south as northern Georgia

Word History

Etymology

Allegheny, Alleghany mountains + English -an

First Known Use

1740, in the meaning defined at sense 1

Time Traveler
The first known use of Alleghenian was in 1740

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Cite this Entry

“Alleghenian.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Alleghenian. Accessed 14 Dec. 2025.

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