Topic: GEOGRAPHY
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| Date: | 1300-1400 |
| Language: | French |
| Origin: | frontière, from front; FRONT1 |
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fron‧tier
1 [countable] especially British EnglishSG the border of a country
frontier town/area/post etc (=a town etc on a frontier)
2 an area where people have never lived before, that not much is known about, especially in the western US before the 20th century : a novel about a family's struggle on the American frontier space, the final frontier
the frontier
SGa novel about a family's struggle on the American frontierspace, the final frontier3 the limits of what is known about something
the frontiers of knowledge/physics etc
push back the frontiers (=discover new things)
