(historical) A borderland of Habsburg Austria, and later the Austro-Hungarian Empire, which acted as the cordon sanitaire against incursions from the Ottoman Empire.

The official nickname for the state of Alaska in the United States of America.

plural of e-frontier

plural of frontier orbital

(poetic, slang) Synonym of outer space

One of 93 counties in Nebraska, United States. County seat: Stockville.

plural of scientific frontier

A geographical frontier capable of being occupied and defended in a strategic manner, rather than haphazardly.

A district of the Military Frontier, a territory in the Habsburg Monarchy, first during the period of the Austrian Empire and then during the Austro-Hungarian Monarchy.

The former name of Khyber Pakhtunkhwa, a province in north-west Pakistan renamed in 2010.