Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “frontier”

frontier

noun [C] uk   /ˈfrʌn.tɪər/ /frʌnˈtɪər/ us    /-ˈtɪr/
C2 a border between two countries, or (especially in the past in the US) a border between land used to grow crops where people live and wild land: Some of the frontier between Germany and Poland follows the course of the river Oder Nepal has frontiers with both India and China. They lived in a town close to the frontier.
(Definition of frontier from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of frontier?
Add Cambridge dictionaries to your browser to your website

Definitions of “frontier” in other dictionaries

SMART Thesaurus: Territorial boundaries

“frontier”: synonyms and related words:

You can also find related words, phrases, and synonyms in the topics:

Word of the Day

hello stranger

said to a person that you know but have not seen for a long time

Word of the Day

Come on – you can do it! Phrasal verbs with ‘come’.

by Liz Walter​,
November 19, 2014
As part of an occasional series on the tricky subject of phrasal verbs, this blog looks at ones formed with the verb ‘come’. If you are reading this blog, I’m sure you already know come from, as it is one of the first things you learn in class: I come from Scotland/Spain.

Read More 

silver splicer noun

November 17, 2014
informal a person who marries in later life Newly retired and now newlywed – rise of the ‘silver splicers’ Reaching pension age becomes a trigger to tie the knot as baby-boomers begin to redefine retirement

Read More