Definition of extensionnext
1
as in stretching
the act of making longer the board's extension of the school year drew howls of protest

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2
as in addition
a smaller structure added to a main building the new extension will connect the house with what is now a freestanding garage

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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 extension Kalshi, represented by the attorney who convinced justices to strike down Trump’s tariffs, recently requested a month-long extension from the court. — Eleanor Mueller, semafor.com, 16 Oct. 2026 While drivers are being urged to use alternate routes, some lanes on the Interstate 280 extension will be closed for road work. — Tim Fang, CBS News, 16 Oct. 2026 Another addition is CineGouna Series, led by Egyptian screenwriter Mariam Naoum, an extension of the industry program into an ever more popular medium, both across the region and the wider international entertainment industry. — Essie Assibu, Variety, 16 Oct. 2026 Perfect for suiting up and putting on ski or hiking boots, the cushioned seat flips over and doubles as a worktop, serving as an extension of the rear garage and/or the compact kitchen block. — New Atlas, 15 Oct. 2026 See All Example Sentences for extension
Recent Examples of Synonyms for extension
Noun
  • Other days included yoga and stretching, catching hundreds of balls on the Jugs machine or recovering at Kollective, a social performance club in Austin.
    — Sam Jane, Denver Post, 10 Oct. 2026
  • Daily laundry service after a day spent hiking, stretching, and sprinting is a welcome bonus.
    — Condé Nast, Condé Nast Traveler, 8 Oct. 2026
Noun
  • Over the record’s 33 minutes, Holden delivers an outstanding addition to his catalog that’s as absorbing and realist as any rap album this year.
    — Matthew Ritchie, Pitchfork, 15 Oct. 2026
  • The Danish Dogma25 projects are financed in a collaboration between Zentropa, DR, and Nordisk Film Distribution, with the addition of Netflix in the Nordics, constituting the core financing necessary to realize all five projects.
    — Melanie Goodfellow, Deadline, 15 Oct. 2026
Noun
  • Also, ibogaine’s prolongation of the heart’s QT intervals carries a real risk of fatal arrhythmia.
    — Michelle Lhooq, New Yorker, 7 Aug. 2026
  • The prolongation was 242 days in 2023 and 346 days in 2024, according to the report.
    — Steve Sadin, Chicago Tribune, 17 Mar. 2026

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Cite this Entry

“Extension.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/extension. Accessed 21 Oct. 2026.

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