- (UK) IPA (key): /ˈfrʌntɪə/ or /ˈfrɒntɪə/ or /ˈfrʌntjə/ or /ˈfrɒntjə/
- (US) IPA (key): /frʌnˈtɪr/ or /frɑnˈtɪr/
Audio (US) (file)
- Hyphenation: fron‧tier
- The frontier is part of a country that is next to another country.
- A frontier is an area where few or no people live.
- Many settlers were killed on the frontier during colonial days in America.
- Outer space is said to be the last frontier.