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 Personal autonomous vehicles, by contrast, are a natural extension of the company’s 118 years of expertise in building vehicles for individual customers. — Alyson Shontell, Fortune, 2 Oct. 2026 While the statute of limitations for the crime was just six years in 1989, it was extended to 20 years in 1999, then again to 25 years with an additional five-year extension for DNA evidence in 2015. — Tim Stelloh, NBC news, 2 Oct. 2026 As Marchand first reported last month, Buck has clinched a sweet renewal deal with ESPN, inking a six-year extension that’s worth nearly $110 million. — Anthony Crupi, Sportico.com, 2 Oct. 2026 In one of the more puzzling developments of this broadcast cycle, ESPN and Aikman have yet to reach a contract extension even after the network finalized a new deal with Buck. — Bobby Burack Outkick, FOXNews.com, 2 Oct. 2026 See All Example Sentences for extension
Recent Examples of Synonyms for extension
Noun
  • There’s also a 24-hour gym, a light and airy place with multiple cardio machines, weight training equipment, and floor space for yoga, stretching, or floor exercises (and enough room to do so without impeding on anyone else’s space).
    — Condé Nast, Condé Nast Traveler, 6 Oct. 2026
  • Then the team broke for stretching, and the coach went down the line asking how everyone felt.
    — Kristian Winfield, New York Daily News, 3 Oct. 2026
Noun
  • In 2021, Estate Yountville was purchased by Boardwalk Investments Yountville, LLC, and revamped with interior and exterior updates, including the addition of century-old olive trees.
    — Condé Nast, Condé Nast Traveler, 8 Oct. 2026
  • Having just worked together on Taylor’s Patient Zero music video, perhaps the vampish Dakota’s influence is behind the addition of leather and lace to Swift’s after-dark oufits?
    — Olivia Allen, Vogue, 7 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 9 Oct. 2026.

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