01 a. Of or pertaining to the Allegheny Mountains, or the region where they are situated. Also Al"le*gha`ny.
-
1.
Of or pertaining to the Allegheny Mountains, or the region where they are situated. Also Al"le*gha`ny.
-
2.
Pertaining to or designating a subdivision of the Pennsylvanian coal measure.(Geol.)