Relating to the Allegheny Mountains or region; a person from the Allegheny region of the eastern United States.
From 'Allegheny,' the name of a major mountain range in the eastern United States, possibly derived from a Lenape or Shawnee word. The suffix '-ian' indicates belonging to or coming from a place.
The Allegheny Mountains were named by Native Americans, and this word is a geographer's favorite—the Alleghanian orogeny (mountain-building event) happened over 300 million years ago and created some of the oldest mountains on Earth!
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