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frontier

noun
/ˈfrʌn.tɪər/

Meaning

A new area of activity, knowledge, or development; the edge of knowledge or achievement.
A border between two countries; also a new area of knowledge or activity.

Example Sentences

Robotic surgery is exploring a new frontier in medicine.

The soldiers were stationed at the frontier to guard the border.

Example Expressions

frontier of knowledge

Synonyms

boundary, edge, border, limit, borderland
Entry 1
boundary, edge
Entry 2
border, boundary, edge, limit, borderland

Antonyms

interior, center
Entry 1
interior, center
Entry 2
center, interior

Collocations

frontier area, frontier guard, expand frontier, frontier town

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The act of bringing goods or services into a country from abroad
A department responsible for supplying food and equipment, especially in the military.

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