Definition of coterminousnext
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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Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Recent Examples of coterminous Crowned at Rome by Pope Leo III, Charlemagne ruled a Christian empire that was nearly coterminous with Western Christendom. — Britannica Editors, Encyclopedia Britannica, 24 July 2026 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 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
Recent Examples of Synonyms for coterminous
Adjective
  • The screenings run concurrent with the BBC Studios Showcase in London but no longer with MIP London, which is ending as MIP instead launches a London Book Fair event a few weeks later.
    — Max Goldbart, Deadline, 15 Oct. 2026
  • Mackenzie Shirilla is serving two concurrent sentences of 15 years to life for killing her boyfriend, Dominic Russo, 20, and their friend, Davion Flanagan, 19, in a 2022 crash in Strongsville, Ohio, Fox News Digital previously reported.
    — Stepheny Price, FOXNews.com, 13 Oct. 2026
Adjective
  • Accelerating human evolution coincident with the development of agriculture increased redheadedness and decreased male-pattern baldness.
    — Ann Manov, Harpers Magazine, 23 June 2026
  • In a separate announcement, but with coincident timing, WestJet also announced a stopover plan in Calgary.
    — Don Tse, Forbes.com, 23 June 2026
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
Adjective
  • The underlying problem for the court seemed to be the lack of a benchmark.
    — Cheryl Winokur Munk, CNBC, 10 Oct. 2026
  • The system is designed to continue denying communications until the underlying protocol changes, at which point the signal-identification and response process can begin again.
    — Kaif Shaikh, Interesting Engineering, 10 Oct. 2026
Adjective
  • The rideshare mission, known as Transporter-18, carried 130 payloads into a polar Sun-synchronous orbit.
    — Stephen Clark, ArsTechnica, 2 Oct. 2026
  • Amanda Kocon, Edmentum's chief strategy and operating officer, said the interface looks like an online college course where students work through activities and videos, with options for synchronous instruction through video calls and office hours.
    — Lucy Tobier, IndyStar, 18 Aug. 2026
Adjective
  • How’s an architect supposed to address these overlapping and contradictory rubrics, much less resolve them?
    — Justin Davidson, Curbed, 2 Sep. 2026
  • Recent teammates mostly function as an information pipeline, while older, non-overlapping alumni may be shaping how recruiters and HR assess candidates who share their team affiliation, rather than simply passing along a tip.
    — Mia Osmonbekov, Fortune, 1 Aug. 2026
Adjective
  • This coincidental trait inspired researchers to name the new genus Herugavialis after Heru, or Horus, the Egyptian god associated with the construction of the mythical creature.
    — Taylor Nicioli, CNN Money, 6 Oct. 2026
  • Now, with this curious surge of coincidental timing, the film industry is returning the favor.
    — James Hibberd, HollywoodReporter, 9 Sep. 2026
Adjective
  • 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
  • How can its digital platforms become coextensive with its in-person programming, without losing the uniqueness of each?
    — New York Times, New York Times, 21 May 2021

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Cite this Entry

“Coterminous.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/coterminous. Accessed 17 Oct. 2026.

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