\O*ris"ka*ny\, a. [From Oriskany, in New York.] (Geol.)
Designating, or pertaining to, certain beds, chiefly
limestone, characteristic of the latest period of the
Silurian age.
{Oriskany period}, a subdivision of the American Paleozoic
   system intermediate or translational in character between
   the Silurian and Devonian ages. See Chart of {Geology}.