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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

Connectivity has become the latest frontier amid the AI infrastructure buildout and fiber optics are replacing copper for long-distance and rack-to-rack interconnects in AI data centers.

From The Wall Street Journal • Jun. 2, 2026

"The cultural conversation they were having in 2019 about identity, queerness, mental health, is now the conversation everyone is having everywhere, so the show no longer feels like a frontier."

From BBC • May 30, 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

Nowadays, Garden City, which was once a rather raucous frontier town, is quite subdued.

From "In Cold Blood" by Truman Capote




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