as in borders
a region along the dividing line between two countries
the Apaches were once feared on both sides of the U.S.-Mexico frontier
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Recent Examples of frontiers
Whether through nano-scale capsules, Nordic hyperscale centers or entirely new frontiers, the geography of data centers is poised for radical transformation.
—
Nicola Sfondrini, Forbes.com, 2 Sep. 2025
Artificial intelligence is pushing the frontiers of science and technology—piloting military drones, diagnosing diseases, and designing enzymes that devour plastic waste.
—Harry Booth, Time, 28 Aug. 2025
But perhaps nowhere is the study of literature, philosophy, the arts, and languages more valued, their spirit more authentically preserved, their frontiers more doggedly pursued, than at Chicago.
—Tyler Austin Harper, The Atlantic, 26 Aug. 2025
Space exploration is among the most exciting frontiers for humankind.
—James Cramer, Baltimore Sun, 20 Aug. 2025
Forever the inventor Mann continues to teach, run his lab, and test new frontiers of wearable devices, smart clothing, and immersive environments.
—IEEE Spectrum, 19 Aug. 2025
Nicola Sfondrini, Forbes.com, 2 Sep. 2025
Artificial intelligence is pushing the frontiers of science and technology—piloting military drones, diagnosing diseases, and designing enzymes that devour plastic waste.
—Harry Booth, Time, 28 Aug. 2025
But perhaps nowhere is the study of literature, philosophy, the arts, and languages more valued, their spirit more authentically preserved, their frontiers more doggedly pursued, than at Chicago.
—Tyler Austin Harper, The Atlantic, 26 Aug. 2025
Space exploration is among the most exciting frontiers for humankind.
—James Cramer, Baltimore Sun, 20 Aug. 2025
Forever the inventor Mann continues to teach, run his lab, and test new frontiers of wearable devices, smart clothing, and immersive environments.
—IEEE Spectrum, 19 Aug. 2025
Recent Examples of Synonyms for frontiers
borders
Noun
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Many, like six of the 24 at Sawyer Point, are hybrid courts, where the smaller pickleball outlines overlap with larger tennis borders.—
Ethan Singer,
New York Times,
2 Sep. 2025
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Sadly, the Games that were slated for 2020 were postponed until 2021 due to Covid, while Japan’s borders remained closed until October 2022.—
Isabelle Kliger,
Forbes.com,
2 Sep. 2025
Cite this Entry
“Frontiers.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/frontiers. Accessed 9 Sep. 2025.
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