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frontier
src: wikipedia
- Definition
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- frontier :a wilderness at the edge of a settled area of a country
- the individualism of the frontier in Andrew Jackson's day
- frontier :an undeveloped field of study; a topic inviting research and development
- he worked at the frontier of brain science
- frontier :an international boundary or the area (often fortified) immediately inside the boundary
- frontier :a wilderness at the edge of a settled area of a country
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- Common Words