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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.

The “latest advancements at the AI frontier have increased the level of urgency around cybersecurity,” Palo Alto Networks’ CEO said.

From The Wall Street Journal • Jun. 3, 2026

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

"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

He’d discovered it in his first fight on the Zemeni frontier.

From "Six of Crows" by Leigh Bardugo




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