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 The Ducks signed the 40-year-old McIlvane to a multi-year extensions just a couple of months ago. Steve Conroy, Boston Herald, 10 June 2026 DeKalb County commissioners have approved a 100-day extension of a moratorium on new data center applications, keeping the pause in place through the end of September. Jamal Goss, CBS News, 10 June 2026 The extension means Mahomes now has a contract from 2026 to 2033 worth over half a billion dollars over eight seasons. Armando Salguero, FOXNews.com, 10 June 2026 Republican leaders tried to start the process last week, but seven Republicans joined nearly all Democrats in blocking a long-term extension. ABC News, 10 June 2026 See All Example Sentences for extension
Recent Examples of Synonyms for extension
Noun
  • The growth of the embryo is vitally dependent on the stretching of the skin, muscles, and ligaments within the woman’s body as a result of hormonal changes to accommodate this transformation.
    Sherri Gordon, Parents, 9 June 2026
  • To help prepare your body for sleep, experts recommend activities such as stretching, yoga, meditation, prayer, taking a warm shower or bath, reading, or listening to relaxing music.
    Allison Forsyth, Health, 9 June 2026
Noun
  • The addition gives Golden State another body in the frontcourt along with starting center Kiah Stokes and backup Laeticia Amihere.
    Nathan Canilao, Mercury News, 10 June 2026
  • The trade netted the White Sox catcher Kyle Teel, right-hander Wikelman Gonzalez and infielder Chase Meidroth, in addition to Montgomery.
    Johnny Flores Jr, New York Times, 10 June 2026
Noun
  • 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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“Extension.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/extension. Accessed 16 Jun. 2026.

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