What does “frontier” mean?
- 1
nounthe border between two countries
Troops were sent to guard the frontier.
- 2
nounthe limit of what is known or achieved in an area of knowledge
Scientists are pushing the frontiers of medicine.
Frontier at a glance
- Part of speech
- noun
- CEFR level
- C1 (advanced)
- Pronunciation
- /frʌnˈtɪr/ · frun-TEER
How to use “frontier” correctly
In US history, “the frontier” means the edge of settled land in the American West.
Common phrases with “frontier”
- the frontiers of science
- cross the frontier
- the new frontier
“frontier” is on these word lists
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