1
as in concurrent
existing or occurring at the same period of time
the Alfred Lunt-Lynn Fontanne partnership was more or less coterminous with Broadway's golden age
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2
as in coinciding
occupying the same space
Massachusetts' Nantucket County isn't quite coterminous with the island of the same name, as the county includes two small nearby islets
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Recent Examples of coterminous
Politics are so digital at this point that the images saved on your phone are seen as coterminous with your personal beliefs.
—
Kyle Chayka, New Yorker, 2 July 2025
While colonial administrators imagined the West to be home to progress, order, and economic development, all of which were imagined as coterminous with whiteness, the East was imagined as its opposite.
—Zachariah Mampilly, Foreign Affairs, 1 Apr. 2025
The nation’s period of domestic bliss was practically coterminous with the presidency of James Monroe, a Democratic-Republican whose landslide victory in 1816 accelerated the Federalist Party’s collapse.
—Eli Wizevich, Smithsonian Magazine, 1 Dec. 2024
From the moment of her father’s death and her subsequent coronation—receiving the Crown of St. Edward on her head, and bearing its almost five pounds of weight upright for the next three hours—the vast dimensions of her status as queen were coterminous with the diminutive dimensions of her person.
—Rebecca Mead, The New Yorker, 30 Sep. 2024
This is a common attitude in competitive Duval County, which is coterminous with Jacksonville.
—Monica Potts, ABC News, 19 July 2024
And the court said that town boundaries and school districts being coterminous is unconstitutional and causes the problem, and that hasn’t changed.
—Alison Cross, Hartford Courant, 17 June 2024
Clearly, then, the gambit is designed to have, coterminous with Trump’s criminal prosecution by the Biden Justice Department’s special counsel, a parallel probe of the Bidens.
—Nr Editors, National Review, 15 Dec. 2023
Kyle Chayka, New Yorker, 2 July 2025
While colonial administrators imagined the West to be home to progress, order, and economic development, all of which were imagined as coterminous with whiteness, the East was imagined as its opposite.
—Zachariah Mampilly, Foreign Affairs, 1 Apr. 2025
The nation’s period of domestic bliss was practically coterminous with the presidency of James Monroe, a Democratic-Republican whose landslide victory in 1816 accelerated the Federalist Party’s collapse.
—Eli Wizevich, Smithsonian Magazine, 1 Dec. 2024
From the moment of her father’s death and her subsequent coronation—receiving the Crown of St. Edward on her head, and bearing its almost five pounds of weight upright for the next three hours—the vast dimensions of her status as queen were coterminous with the diminutive dimensions of her person.
—Rebecca Mead, The New Yorker, 30 Sep. 2024
This is a common attitude in competitive Duval County, which is coterminous with Jacksonville.
—Monica Potts, ABC News, 19 July 2024
And the court said that town boundaries and school districts being coterminous is unconstitutional and causes the problem, and that hasn’t changed.
—Alison Cross, Hartford Courant, 17 June 2024
Clearly, then, the gambit is designed to have, coterminous with Trump’s criminal prosecution by the Biden Justice Department’s special counsel, a parallel probe of the Bidens.
—Nr Editors, National Review, 15 Dec. 2023
Recent Examples of Synonyms for coterminous
Adjective
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Way’s models show that several concurrent LIPs could have thrown vast quantities of carbon dioxide into Venus’ atmosphere, warming the world so severely that much of its liquid water boiled away into the sky, accelerating the warming further.—
Quanta Magazine,
Quanta Magazine,
15 Sep. 2025
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For comparison, the boxing match between Mike Tyson and Jake Paul in November 2024 — which was Netflix’s first foray into live boxing — pulled in an AMA of 108 million viewers and peaked at 65 million concurrent streams.—
Joe Otterson,
Variety,
15 Sep. 2025
Adjective
-
For his last runway collection, unveiled in September, Michele constructed a parallel universe of side-by-side shows separated by a wall that when lifted revealed twins in identical looks in synchronic stride.—
Colleen Barry,
Fortune,
24 Nov. 2022
-
With a lockable synchronic-tilt mechanism and special Z-Shape design, the Kaiser 2 can accommodate a weight up to 180kg, quite a bit more than normal mechanisms on office chairs and the back can be reclined to an angle of 160 degrees which can be locked when not in rocking mode.—
Mark Sparrow,
Forbes,
11 Oct. 2021
Adjective
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The timing of these changes were roughly coincident with clarification of Information Blocking rules and Epic’s introduction of its own competing product.—
Seth Joseph,
Forbes,
26 Feb. 2024
-
The tendency of policymakers to date has been to view the harms from internet platforms not as systemic, but as a series of coincident issues.—
Roger McNamee,
Wired,
24 July 2021
Adjective
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Williams also praised the chair for its slim profile, synchronous tilt, and adjustable lumbar support that make the seat suitable for long working hours.—
Audrey Lee,
Architectural Digest,
16 Sep. 2025
-
Shift from synchronous to asynchronous communication.—
Jodie Cook,
Forbes.com,
11 Sep. 2025
Adjective
-
In turn, real-time market data from the platform is used to continuously stress-test and refine the underlying analytical architecture.—
Benjamin D. Summers,
Forbes.com,
15 Sep. 2025
-
But apps like Photos and Messages share more underlying code with their iOS and iPadOS equivalents.—
ArsTechnica,
ArsTechnica,
15 Sep. 2025
Adjective
-
Law enforcement has not connected the incidents, despite the coincidental timing.—
Amber Corrine,
VIBE.com,
12 Sep. 2025
-
The timing, although likely coincidental, illustrated the dilemma Democrats currently face.—
Mabinty Quarshie,
The Washington Examiner,
11 Sep. 2025
Adjective
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Beyond this subset of works, the chipmunk paintings are also coextensive with the entire body and thrust of her production.—
Sarah Lehrer-Graiwer,
Artforum,
1 Oct. 2024
-
Being online was not coextensive with being alive.—
Harper’s Magazine ,
Harper’s Magazine ,
22 June 2022
Adjective
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While there is no suggestion that deposit insurance might be abolished, the FDIC has become so conterminous with the concept that (unfounded) worries were quickly raised on social media about the safety of money in banks.—
Felix Salmon,
Axios,
14 Feb. 2025
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The temperature outlook predicts enhanced probabilities of above normal temperatures over much of the western conterminous U.S.—
Diana Leyva,
The Tennessean,
1 Feb. 2024
Cite this Entry
“Coterminous.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/coterminous. Accessed 21 Sep. 2025.
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