frontier

== English == === Etymology === From Middle English frounter, from Old French fronter (whence Modern French frontière), from front. === Pronunciation === (Received Pronunciation) IPA(key): /ˈfɹʌntɪə/, /ˈfɹɒntɪə/, /ˈfɹʌntjə/, /ˈfɹɒntjə/, /fɹʌnˈtɪə/, /fɹɒnˈtɪə/ (General American) IPA(key): /fɹʌnˈtɪɹ/, /fɹɑnˈtɪɹ/ IPA(key): (obsolete) /ˈfɹʌnt͡ʃə/ Rhymes: -ɪə(ɹ) Hyphenation: fron‧tier === Noun === frontier (plural frontiers) The part of a country which borders or faces another country or unsettled region. Synonyms: march, marches, border, marchland, borderland The most advanced or recent version of something; the leading edge. Near-synonyms: vanguard, state of the art (obsolete) An outwork of a fortification. ==== Derived terms ==== ==== Translations ==== === Verb === frontier (third-person singular simple present frontiers, present participle frontiering, simple past and past participle frontiered) (intransitive) To live as pioneers on frontier territory. (transitive, obsolete) To place on the frontier. === References === === Further reading === “frontier”, in Lexico, Dictionary.com; Oxford University Press, 2019–2022.