| 1. |
(satellite adjective) on the American frontier; "one of the last real frontier towns"; "hardships of frontier life" |
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| 2. |
(noun) an undeveloped field of study; a topic inviting research and development; "he worked at the frontier of brain science" |
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Related Words: branch of knowledge, discipline, field, field of study, study, subject, subject area, subject field |
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| 3. |
(noun) a wilderness at the edge of a settled area of a country; "the individualism of the frontier in Andrew Jackson's day" |
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Related Words: wild, wilderness |
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| 4. |
(noun) an international boundary or the area along such a boundary |
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Related Words: bound, boundary, edge |
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