From Middle English frounter, from Old French fronter (whence Modern French frontière), from front.
frontier (plural frontiers)
- The part of a country which borders or faces another country or unsettled region.
- The most advanced or recent version of something; leading edge.
- I often research products on the frontier of artificial intelligence and other modern software.
- final frontier
- frontier orbital
- scientific frontier
frontier (third-person singular simple present frontiers, present participle frontiering, simple past and past participle frontiered)
- To live as pioneers on frontier territory.
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