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frontier

B2
Fairly common

Pronunciation

UK

  • /frˈʌntiə/

US

  • /frənˈtɪr/

Meanings

Noun

  1. a border or outer edge, especially of settled or known land

  2. the leading edge of knowledge, technology, or activity

Adjective

  1. located at or relating to a border region

  2. highly advanced or exploratory in a field

Beyond the definition

The word "frontier" often brings to mind cowboys and pioneers moving west in America, but its meaning is broader than that. A frontier is the outer edge of settled land, the border area between places, or a region beyond what is known or fully developed. It can be a real place on a map, but it can also be an area of new progress and discovery. We can talk about space as the frontier of human knowledge, or artificial intelligence as a new technological frontier.

The word originally comes from Old French, where it referred to the "front line" of an army, which helps explain its sense of edge, boundary, and advance. You might say someone is "on the frontier" of an industry if they are doing very new work. In many cases, the word suggests being at the edge of what is known, built, or understood.

Examples

  1. 1

    History lesson

    In school, we learned about life on the American frontier.

  2. 2

    Settler life

    Settlers on the frontier had to build their own homes and grow their own food.

  3. 3

    Space exploration

    Space is often described as the next frontier for human exploration.

    • Phrasethe next frontier

      the next big area to explore or develop

  4. 4

    Medical research

    Researchers are working at the frontier of cancer treatment.

    • Patternat the frontier of + field

      at the most advanced edge of that field

More examples
  1. 5

    Language learning

    AI is opening a new frontier in language learning.

See also

Similar

Shades of meaning

Contrast

Used with (collocations)

  • western frontier
  • new frontier
  • frontier of science
  • frontier town

Word family

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Forms and spellings

2 forms open this card.

Main spelling

  • frontiernoun

Forms

  • frontierspluralnoun