frontier
noun
the part of a country that borders another country; boundary; border.
frontiers
-
pluralof frontier.plural
The grammatical form denoting more than one person, place, thing, or idea.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Actually, I take that back – consulting her most devoted fans will open new frontiers for you.
From Salon ● Aug. 29, 2026
Terry says Qantas is conquering "one of the last frontiers in commercial aviation".
From BBC ● Jun. 26, 2026
US astronaut Christina Koch, the first woman to take part in a lunar mission, was on Wednesday named the winner of a top Spanish prize for having "helped extend the frontiers of humanity".
From Barron's ● Jun. 17, 2026
Although much of the series deals with trails blazed and frontiers tamed, a prime example of the show’s thesis-meets-synthesis is an episode on the rise of New York.
From The Wall Street Journal ● Jun. 2, 2026
This explains the fact that in some places the frontiers between the superstates are arbitrary.
From "1984" by George Orwell
