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 Nic Solorzano, the county elections spokesperson, said Democratic primary voters who got in line during the extension would use provisional ballots. Jamie Landers, Dallas Morning News, 4 Mar. 2026 Taxpayers who need more time can request a six-month filing extension — but any taxes owed must still be paid by the April deadline to avoid penalties and interest. Hali Smith march 4, Idaho Statesman, 4 Mar. 2026 Karlos Funes, Chief Revenue Officer, views this model as a natural extension of the company’s founding principles. Wyles Daniel, USA Today, 4 Mar. 2026 The extension was unanimously approved by the board of the the San Diego Zoo Wildlife Alliance, the nonprofit that operates the zoo. David Garrick, San Diego Union-Tribune, 4 Mar. 2026 See All Example Sentences for extension
Recent Examples of Synonyms for extension
Noun
  • The rover has spent roughly six months exploring unusual geological formations on Mars known as boxwork — crisscrossing ridges that resemble giant spiderwebs stretching across the surface for miles when viewed from orbit.
    Ryan Brennan, Kansas City Star, 4 Mar. 2026
  • Daily stretching can improve circulation, enhance posture, and promote mental health, to name a few perks.
    Julia Ries Wexler, Health, 25 Feb. 2026
Noun
  • In addition to seeing stronger hair over time, she’s noticed that adding this formula to her regimen has helped improve her energy levels and balance her hormone levels.
    Emily Orofino, Vogue, 4 Mar. 2026
  • In addition to the void left by Lemon and Lane’s departures, the Trojans will also be without their top returning wideout this spring, as Tanook Hines will sit out the entire session following an offseason procedure.
    Ryan Kartje, Los Angeles Times, 4 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 Mar. 2026.

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