FRONTIER
frontier
(noun) an undeveloped field of study; a topic inviting research and development; “he worked at the frontier of brain science”
frontier
(noun) an international boundary or the area (often fortified) immediately inside the boundary
frontier
(noun) a wilderness at the edge of a settled area of a country; “the individualism of the frontier in Andrew Jackson’s day”
Source: WordNet® 3.1
Proper noun
Frontier
An unincorporated community in Koochiching, Minnesota.
A city in North Dakota.
An unincorporated community in Lincoln County, Wyoming.
A village in Saskatchewan.
Etymology
Noun
frontier (plural frontiers)
The part of a country which borders or faces another country or unsettled region
The most advanced or recent version of something; leading edge.
(obsolete) An outwork of a fortification.
Synonyms
• (part of country bordering another): marches; the border
Adjective
frontier
Lying on the exterior part; bordering; coterminous.
Verb
frontier (third-person singular simple present frontiers, present participle frontiering, simple past and past participle frontiered)
(intransitive) To live as pioneers on frontier territory.
(transitive, obsolete) To place on the frontier.
Source: Wiktionary
Fron"tier, n. Etym: [F. frontière, LL. frontaria. See Front.]
1. 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.
2. (Fort.)
Definition: An outwork. [Obs.]
Palisadoes, frontiers, parapets. Shak.
Fron"tier, a.
1. Lying on the exterior part; bordering; conterminous; as, a
frontier town.
2. Of or relating to a frontier. "Frontier experience." W. Irving.
Fron"tier, v. i.
Definition: To constitute or form a frontier; to have a frontier; -- with
on. [Obs.] Sir W. Temple.
Source: Webster’s Unabridged Dictionary 1913 Edition