Frontier | Mean of frontier in English Dictionary

/ˌfrʌnˈtiɚ/

  • Noun
  • a border between two countries
    1. the frontier between Canada and the U.S.
  • a distant area where few people live
    1. They were sent on an expedition to explore the western frontier.
    2. frontier life
  • the limits of knowledge in a particular field
    1. the frontiers of science
    2. a discovery at the very frontiers of our understanding
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