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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.

CEO Nikesh Arora said in a press release that the “latest advancements at the AI frontier have increased the level of urgency around cybersecurity.”

From MarketWatch • Jun. 2, 2026

Bhatia said India has three broad interests in Myanmar: stability along its north-eastern frontier, the success of its Act East policy and managing the strategic implications of China's growing influence in the country.

From BBC • Jun. 2, 2026

In the model, the “availability” phase entailed contact and small-scale movements across the frontier, with trading relationships and marriage alliances, for example, forming gradually.

From Science Daily • May 30, 2026

Rapid advances in frontier AI models, like Anthropic’s Mythos and OpenAI’s GPT-5.5, also have many companies worried that hackers will be able to identify vulnerabilities several times faster than cybersecurity teams can patch them.

From The Wall Street Journal • May 28, 2026

He even managed to get Nate a frontier shirt, one of the tie-front shirts most of the men in the army wore with pride.

From I Survived the American Revolution, 1776 by Lauren Tarshis




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