frontiered

As a noun terms

is .

As an adjective frontiered is

placed on the frontiers.

As adjectives the difference between frontier and frontiered

is that frontier is lying on the exterior part; bordering; conterminous while frontiered is placed on the frontiers.

As a noun frontier

is 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.

As a proper noun Frontier

is an unincorporated community in Minnesota.