frontier

plural frontiers

1. The part of a country which borders or faces another country or unsettled region.

   the frontier of civilization

   5 more examples

   For two years the Easterner had been searching for his lost brother, at trading posts and Army forts all along the frontier.

   1950, Dorothy M. Johnson, War Shirt; in Indian Country, London: Corgi, 1961, page 107

   There were not many passengers, and the journey was uneventful until the frontier was reached at Padang Besar, although an armed escort of Malay police accompanied the train from Alor Star.

   1955 April, “Notes and News: A Journey through Thailand”, in Railway Magazine, page 286

   From time to time the coaches of the Lötschberg Railway itself, which in comfort and décor can rank with the finest in Europe today, travel far from the frontiers of Switzerland on through workings such as these.

   1960 December, Cecil J. Allen, “Operating a mountain main line: the Bern-Lötschberg-Simplon: Part One”, in Trains Illustrated, page 743

   Unlike a boundary, which evokes the image of a line on a map and demarcates spheres of political control, the frontier is an area where colonisation is taking place....no authority is recognised as legitimate by all parties or is able to [exercise] undisputed control over the area.

   1979, Richard Elphic, Hermann Guilomee (editors), The shaping of South African Society, 1652 - 1820, page 297

   But there is also real opposition to Nato expansion - and even to Nato's continued existence after the Cold War. This is a view shared by a very large part of Russia's military and foreign affairs establishment. Educated and trained during the Soviet period, they are still inculcated with notions of super-power military might. It has been painful for these people to see Nato's outer edge creep ever closer to what was once the frontier of the USSR.

   2002 November 22, Steven Eke, “Russia's rocky relationship with Nato”, in BBC World Service

   Synonyms: march, marches, border, marchland, borderland

2. The most advanced or recent version of something; the leading edge.

   the frontier of solid state electronics

   1 more example

   Near-synonyms: vanguard, state of the art

   Synonyms: vanguard, state of the art

3. obsoleteAn outwork of a fortification.

   thou hast talk'd. Of sallies and retires, of trenches, tents, Of palisadoes, frontiers, parapets

   c. 1597 (date written), William Shakespeare, “The First Part of Henry the Fourth, […]”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, →OCLC, [Act II, scene iii]

present singular third person frontiers · participle present frontiering · participle past frontiered · past frontiered

1. intransitiveTo live as pioneers on frontier territory.
2. obsoletetransitiveTo place on the frontier.

   now that it is no more a Border, nor frontiered with Enemies, why should such Privileges be any more continued?

   1596 (date written; published 1633), Edmund Spenser, A Vewe of the Present State of Irelande […], Dublin: […] Societie of Stationers, […], →OCLC; republished as A View of the State of Ireland […] (Ancient Irish Histories), Dublin: […] Society of Stationers, […] Hibernia Press, […] [b]y John Morrison, 1809, →OCLC

1. A place in the United States:
   1. An unincorporated community in Woodbridge Township, Hillsdale County, Michigan.
   2. An unincorporated community in Koochiching County, Minnesota, located on the Canadian border.
   3. A minor city in Cass County, North Dakota.
   4. An unincorporated community in Lincoln County, Wyoming.
2. A village in Saskatchewan, Canada.
3. A rural municipality on the US border in south-west Saskatchewan, which includes the village; in full, the Rural Municipality of Frontier No. 19.