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Dictionary definition for: Frontier
1. (n) a wilderness at the edge of a settled area of a country; "the individualism of the frontier in Andrew Jackson''s day"
2. (n) an international boundary or the area (often fortified) immediately inside the boundary
3. (n) an undeveloped field of study; a topic inviting research and development; "he worked at the frontier of brain science"
WordNet 2.1 Copyright Princeton University. All rights reserved.
