frontier
1 ENTRIES FOUND:
plural
frontiers
plural
frontiers
Britannica Dictionary definition of FRONTIER
[count]
1
:
a border between two countries
-
the frontier between Canada and the U.S.
2
:
a distant area where few people live
-
They were sent on an expedition to explore the western frontier.
-
frontier life
3
:
the limits of knowledge in a particular field
— usually plural
-
the frontiers of science
-
a discovery at the very frontiers of our understanding
