— frontierless , adj. — frontierlike , adj.
/frun tear", fron-/ ; also, esp. Brit., /frun"tear/ , n.
1. the part of a country that borders another country; boundary; border.
2. the land or territory that forms the furthest extent of a country's settled or inhabited regions.
3. Often, frontiers .
a. the limit of knowledge or the most advanced achievement in a particular field: the frontiers of physics.
b. an outer limit in a field of endeavor, esp. one in which the opportunities for research and development have not been exploited: the frontiers of space exploration.
4. Math. boundary (def. 2).
adj.
5. of, pertaining to, or located on the frontier: a frontier town.
[ 1350-1400; ME frounter frontier, equiv. to front (in the sense of opposite side; see FRONT) + -ier -IER 2 ]
Syn. 1. See boundary .