frontiers

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.

Pyongyang closed its borders in January 2020 to stop the spread of the coronavirus, with research and media reports indicating that the diplomatically isolated nation spent subsequent years bolstering security along its frontiers.

From Barron's • Apr. 28, 2026

Gene therapy, which introduces new instructions into the body to treat the root cause of a disease, has been one of medicine’s most promising frontiers.

From The Wall Street Journal • Apr. 23, 2026

Others — often referred to as “me too” drugs — are chemically or mechanistically similar to existing therapies, designed to compete within established categories rather than to open new frontiers.

From MarketWatch • Apr. 15, 2026

Hodgkinson's latest triumph leaves upgrading from silver to gold at the world outdoors and Commonwealths as the final frontiers as far as her international medal collection is concerned.

From BBC • Mar. 22, 2026

The frontiers between the three superstates are in some places arbitrary, and in others they fluctuate according to the fortunes of war, but in general they follow geographical lines.

From "1984" by George Orwell