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 Islamic regime has attacked at least three ships since the ceasefire extension took effect. David Zimmermann, The Washington Examiner, 22 Apr. 2026 Last month, Foster negotiated a new three-year, $33 million extension for the Green Bay Packers’ Sean Rhyan, a Southern California native and UCLA product. Daniel Libit, Sportico.com, 22 Apr. 2026 The first applications, available here at USA Jobs, are open to aerospace engineers for two-year terms, with the potential for extension. Elizabeth Howell, Space.com, 21 Apr. 2026 The 2026 season will count toward the second-round tender before the official extension begins in 2027. Nick Harris, Fort Worth Star-Telegram, 21 Apr. 2026 See All Example Sentences for extension
Recent Examples of Synonyms for extension
Noun
  • To keep the parts from breaking, researchers are fine-tuning the metal to withstand constant stretching and squeezing.
    Mrigakshi Dixit, Interesting Engineering, 21 Apr. 2026
  • That said, gentle stretching and other movement in the morning can help alleviate discomfort.
    Kristen Fischer, Health, 17 Apr. 2026
Noun
  • Ólafur Darri Ólafsson and Phil Dunster are among the new casting additions.
    Alex Ritman, Variety, 21 Apr. 2026
  • No big offseason additions were made last summer, as the Bulls counted on Josh Giddey, Coby White and second-year forward Matas Buzelis to carry the offense.
    Paul Sullivan, Chicago Tribune, 21 Apr. 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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Cite this Entry

“Extension.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/extension. Accessed 27 Apr. 2026.

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