Definition: Frontier

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From Middle English frounter, from Old French fronter (whence Modern French frontière), from front.


frontier (plural frontiers)

  1. The part of a country which borders or faces another country or unsettled region.
  2. The most advanced or recent version of something; leading edge.
    I often research products on the frontier of artificial intelligence and other modern software.

Derived terms

  • cyberfrontier
  • e-frontier
  • final frontier
  • frontier orbital
  • frontiersman
  • nonfrontier
  • scientific frontier


frontier (third-person singular simple present frontiers, present participle frontiering, simple past and past participle frontiered)

  1. To live as pioneers on frontier territory.


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