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frontier
[ fruhn-teer, fron-; also, especially British, fruhn-teer ]
/ frʌnˈtɪər, frɒn-; also, especially British, ˈfrʌn tɪər /
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noun
the part of a country that borders another country; boundary; border.
the land or territory that forms the furthest extent of a country's settled or inhabited regions.
Often frontiers.
- the limit of knowledge or the most advanced achievement in a particular field: the frontiers of physics.
- an outer limit in a field of endeavor, especially one in which the opportunities for research and development have not been exploited: the frontiers of space exploration.
Mathematics. boundary (def. 2).
adjective
of, relating to, or located on the frontier: a frontier town.
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Origin of frontier
synonym study for frontier
1. See boundary.
OTHER WORDS FROM frontier
fron·tier·less, adjectivefron·tier·like, adjectivesem·i·fron·tier, nountrans·fron·tier, adjectiveWords nearby frontier
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use frontier in a sentence
British Dictionary definitions for frontier
frontier
/ (ˈfrʌntɪə, frʌnˈtɪə) /
noun
- the region of a country bordering on another or a line, barrier, etc, marking such a boundary
- (as modifier)a frontier post
US and Canadian
- the edge of the settled area of a country
- (as modifier)the frontier spirit
(often plural) the limit of knowledge in a particular fieldthe frontiers of physics have been pushed back
Word Origin for frontier
C14: from Old French frontiere, from front (in the sense: part which is opposite); see front
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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