Frontier meaning

frŭn-tîr, frŭntîr
Frequency:
The definition of a frontier a border between two countries, or the outer limit of what has been explored.

The border between United States and Canada is an example of a frontier.

When there is a new plot of land that has never been explored, this is an example of a new frontier.

When there is a new scientific theory that has not yet been explored, this is an example of a new frontier.

noun
11
4
Any new field of learning, thought, etc. or any part of a field that is still incompletely investigated.

The frontiers of medicine.

noun
6
2
An undeveloped area or field for discovery or research.

Theories on the frontier of astrophysics.

noun
5
3
The border between two countries.
noun
4
2
A region just beyond or at the edge of a settled area.
noun
3
1
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That part of a country which fronts or faces another country or an unsettled region; the marches; the border, confine, or extreme part of a country, bordering on another country; the border of the settled and cultivated part of a country; as, the frontier of civilization.
noun
1
2
Of, on, or near a frontier.
adjective
0
1
Lying on the exterior part; bordering; conterminous.

A frontier town.

adjective
0
1

Origin of frontier

  • Middle English frountier from Old French frontier from front forehead, front front

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Old French fronter (whence Modern French frontière), from front.

    From Wiktionary