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
-
Only a small fraction of concurrent credit students in school districts take at least 29 credit hours.—
Edward McKinnon,
Arkansas Online,
4 Sep. 2025
-
However, in cases where someone was convicted of two or more crimes and served concurrent or uninterrupted consecutive prison terms, those only count as a single conviction under the persistent felony offender law.—
Quinlan Bentley,
The Enquirer,
3 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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The modules are supplemented with synchronous discussions led by world-class educators who provide Masterclasses across diverse disciplines.—
Bryan Penprase,
Forbes.com,
31 Aug. 2025
-
At that time, two different brain networks generate slow, synchronous electrical waves known as slow waves that connect visual stimuli with brain regions required for navigation.—
Maria Mocerino,
Interesting Engineering,
24 Aug. 2025
Adjective
-
The decision drew criticism from IU faculty, students and free-speech advocates, as many speculate that Halaby's pro-Palestinian views were the underlying reason.—
Cate Charron,
IndyStar,
9 Sep. 2025
-
For example, our Network Operations Center and Finance teams now draw from the same underlying dataset to serve very different business needs.—
Fletcher Keister,
Forbes.com,
9 Sep. 2025
Adjective
-
Those distinctions are not coincidental.—
Graeme Wood,
The Atlantic,
2 Sep. 2025
-
The two targets were fighting over how to go about developing the land, which lent some tips to the investigation of their deaths, but there are also a few red herrings and coincidental events that complicate the case.—
Dessi Gomez,
Deadline,
28 Aug. 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 10 Sep. 2025.
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