expert system

noun

: computer software that attempts to mimic the reasoning of a human specialist

Examples of expert system in a Sentence

Recent Examples on the Web
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The classic example is TurboTax, where tax attorneys and programmers turned the IRS tax code into an expert system that calculates taxes due, updated each year. Matt Shea, Forbes.com, 10 June 2026 In practice, these expert systems tended to make strange and sometimes disastrous mistakes when challenged with more complex tasks. Time, 22 Dec. 2025 What’s most strikingly similar is that Fortune 500 companies were excited about expert systems and spent big money to adopt them, and some found huge productivity gains from using them. Jeremy Kahn, Fortune, 9 Sep. 2025

Word History

First Known Use

1977, in the meaning defined above

Time Traveler
The first known use of expert system was in 1977

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Cite this Entry

“Expert system.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/expert%20system. Accessed 4 Jul. 2026.

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