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 However, because the configuration of the whole space is basically open-plan—only the sauna, the kids’ room, and the bathroom are enclosed—the main suite is effectively an extension of the kitchen-dining-living areas. Condé Nast, Condé Nast Traveler, 21 Jan. 2026 The 10-year agreement is expected to generate $311 million in revenue and includes three five-year extension options. Karoline Leonard, Austin American Statesman, 21 Jan. 2026 The hype was so great that after the 2019 season, the club signed Robert to a six-year, $50 million extension prior to his MLB debut. Dan Freedman, Forbes.com, 21 Jan. 2026 For Coker, moving into home design was a practical extension of his work. Okla Jones, Essence, 21 Jan. 2026 See All Example Sentences for extension
Recent Examples of Synonyms for extension
Noun
  • The first happens in accordance with the Earth’s rotation, the second will be healed with stretching and Ibuprofen, and the third is simply a fact of life and the passage of time.
    Tamim Alnuweiri, InStyle, 22 Jan. 2026
  • According to physical therapists, regular stretching plays a critical role in supporting joint health, posture, circulation, and balance, all of which become increasingly important with age.
    Olivia McIntosh, Martha Stewart, 20 Jan. 2026
Noun
  • Armani Beauty Luminous Silk Natural Glow Blurring Foundation A reformulation of your favorite beauty product is always a bit alarming, but Armani’s new addition is more like a glow up.
    Reece Andavolgyi, InStyle, 21 Jan. 2026
  • In medium- or lower-light rooms, however, sun-loving plants like succulents, cacti, and bird of paradise will benefit from the addition of a grow light.
    Alexandra Jones, The Spruce, 21 Jan. 2026

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Cite this Entry

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

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