: being or able to be added to and enclosed within an existing system (such as a computer)
add-in hardware
add-in noun

Examples of add-in in a Sentence

Recent Examples on the Web
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.
Some add-ins complement your tea and offer some health benefits. Sherri Gordon, Health, 21 Feb. 2026 Nutty farro helps bulk up this salad made with tons of super savory add-ins like olives, feta, and of course, crunchy snap peas. Cameron Beall, Southern Living, 20 Feb. 2026 Don’t be afraid to experiment with add-ins. Caroline Tien, SELF, 5 Feb. 2026 Use your favorite butter brand and mix in spicy add-ins yourself to control the level of heat. Sophia Beams, Better Homes & Gardens, 28 Jan. 2026 See All Example Sentences for add-in

Word History

First Known Use

1980, in the meaning defined above

Time Traveler
The first known use of add-in was in 1980

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Cite this Entry

“Add-in.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/add-in. Accessed 24 Feb. 2026.

Last Updated: - Updated example sentences
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