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used in a sentence
2 meanings
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1  —as in:
the frontier of Tibet
Definition an international boundary or a wilderness at the edge of a settled area
  • Indian soldiers and technicians assisted in staffing some of the checkposts on the frontier with Tibet.
frontier = an international boundary or a wilderness at the edge of a settled area
Other Uses (with this meaning)
  • They pass freely through mountain passes along the Afghanistan-Pakistan frontier.
  • frontier = an international boundary or a wilderness at the edge of a settled area
  • The frontiers between the three super-states are in some places arbitrary, and in others they fluctuate according to the fortunes of war, but in general they follow geographical lines.
    George Orwell  --  1984
  • frontiers = international boundaries
  • In his life, his living life, he go over the Turkey frontier and attack his enemy on his own ground.
    Bram Stoker  --  Dracula
  • frontier = national border
  • Ten minutes later they were crossing the frontier that separated civilization from savagery.
    Aldous Huxley  --  Brave New World
  • frontier = boundary
  • Our new home was one of the oldest buildings in town, Mom proudly told us, with a real frontier quality to it.
    Jeannette Walls  --  The Glass Castle
  • frontier = wilderness area
  • There was one thing that much aided me in renewing and re-creating the stalwart soldier of the Niagara frontier—the man of true and simple energy.
    Nathaniel Hawthorne  --  The Scarlet Letter
  • frontier = wilderness area
  • When I was about five years old, while making an excursion beyond the frontiers of Italy, they passed a week on the shores of the Lake of Como.
    Mary Shelley  --  Frankenstein
  • frontiers = international boundaries
  • He holed up alone, reading Zane Grey novels and wishing himself into them, a man and his horse on the frontier, broken off from the world.
    Laura Hillenbrand  --  Unbroken
  • frontier = wilderness area
  • Instead they had maintained indirect control in the same way the British had, relying on the Pashtun-recruited Frontier Corps rather than regular soldiers.
    Malala Yousafzai  --  I Am Malala
frontier = a wilderness area starting to be settled

Dictionary / pronunciation — Google®Dictionary list —®
2  —as in:
the frontier of brain science
Definition the most recent understandings and achievements in a changing field
  • She wants to extend the frontiers of voice-controlled computer applications.
frontiers = the most recent understandings and achievements in a changing field
Other Uses (with this meaning)
  • The company is extending the frontier of driverless cars.
  • frontier = the most recent understandings and achievements in a changing field
  • Blood rushed to my brain; I felt an animating surge of adrenaline, of possibility, of a frontier being pushed outward.
    Tara Westover  --  Educated
  • frontier = rapidly changing area of knowledge
  • ...against this instrumental background, a much more than human voice began to warble; now throaty, now from the head, now hollow as a flute, now charged with yearning harmonics, it effortlessly passed from Gaspard's Forster's low record on the very frontiers of musical tone to a trilled bat-note high above the highest C to which (in 1770, at the Ducal opera of Parma, and to the astonishment of Mozart) Lucrezia Ajugari, alone of all the singers in history, once piercingly gave utterance.
    Aldous Huxley  --  Brave New World
  • frontiers = most extreme limit
  • The frontier of hope that we all innately pursue will never close.
    Alan Greenspan  --  The Age of Turbulence

Dictionary / pronunciation — Google®Dictionary list —®
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