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frontier

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noun fron·tier \ˌfrən-ˈtir, ˈfrən-ˌ, frän-ˈ, ˈfrän-ˌ\

Simple Definition of frontier

  • : a border between two countries

  • : a distant area where few people live

  • : the limits of knowledge in a particular field

Source: Merriam-Webster's Learner's Dictionary

Full Definition of frontier

  1. 1 a :  a border between two countries b obsolete :  a stronghold on a frontier

  2. 2 a :  a region that forms the margin of settled or developed territory b :  the farthermost limits of knowledge or achievement in a particular subject c :  a line of division between different or opposed things <the frontiers separating science and the humanities — R. W. Clark> d :  a new field for exploitative or developmental activity

frontier adjective

Examples of frontier in a sentence

  1. the frontier between Canada and the U.S.

  2. They were sent on an expedition to explore the western frontier.



Origin of frontier

Middle English fronter, from Anglo-French frountere, fronter, from front


First Known Use: 15th century


FRONTIER Defined for Kids

1

frontier

play
noun fron·tier \ˌfrən-ˈtir\

Definition of frontier for Students

  1. 1 :  a border between two countries

  2. 2 :  the edge of the settled part of a country




2

frontier

play
adjective fron·tier

Definition of frontier for Students

  1. :  of, living in, or situated in the frontier <frontier towns> <frontier families>





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