: 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.
Certain smoothie add-ins can load them with extra sugar and strip away fiber. Christina Manian, Health, 31 Dec. 2025 Optional add-ins of dill weed, garlic powder, and hot pepper flakes are welcome. Anne Byrn, Southern Living, 22 Dec. 2025 A Little Something Extra Shaw points out that some of the top add-ins her bakery likes to incorporate have been pistachios and matcha. Sophia Beams, Better Homes & Gardens, 19 Dec. 2025 Limitations in bus bandwidth led GPUs (and other add-in cards that might require high-bandwidth memory) to move away from accessing a PC’s system memory and instead rely on the GPU’s own dedicated memory. IEEE Spectrum, 17 Nov. 2025 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 11 Jan. 2026.

Last Updated: - Updated example sentences
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