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Definitions

frontier

[fruhn-teer, fron-, fruhn-teer] / frʌnˈtɪər, frɒn-, ˈfrʌn tɪər /




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.

It was the new frontier of learning and community — until it wasn’t.

From Salon • Apr. 12, 2026

All frontier labs have to think about ensuring that proper guardrails are put in place so that agents simply end up doing “exactly what they’ve been told to do,” Hassabis added.

From MarketWatch • Apr. 11, 2026

Meanwhile, Altman said in this week’s Axios interview that “the frontier models are all sort of in the hands of pretty responsible companies.”

From MarketWatch • Apr. 11, 2026

Muse Spark does appear to be competitive with other so-called frontier AI models.

From The Wall Street Journal • Apr. 10, 2026

In 1870, at the age of eighteen, he migrated from Tennessee to the still-wild frontier of central Texas.

From "Killers of the Flower Moon" by David Grann




Vocabulary lists containing frontier