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add-in

[ ad-in ]
/ ˈædˌɪn /
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noun Digital Technology.

a component, as a video card or chip, added to a computer to expand its capabilities.
a small software program that adds a feature to another application.

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QUIZ YOURSELF ON "WAS" VS. "WERE"!

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“Was” is used for the indicative past tense of “to be,” and “were” is only used for the subjunctive past tense.

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Origin of add-in

First recorded in 1980–85; noun use of verb phrase add-in
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

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