test case

noun

1
: a representative case whose outcome is likely to serve as a precedent
2
: a proceeding brought by agreement or on an understanding of the parties to obtain a decision as to the constitutionality of a statute

Examples of test case 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.
The project serves as a real-world test case for decentralized carbon sourcing. Aamir Khollam, Interesting Engineering, 24 Mar. 2026 After OpenAI and Anthropic launched dedicated health care initiatives in January, a study published in February found that OpenAI’s ChatGPT Health had a 50% error rate, incorrectly recommending that care be delayed in emergency test cases half the time. Oni Blackstock, STAT, 23 Mar. 2026 For now, the Halligan appeal remains the clearest test case, and the administration seems dead-set on appealing it until the Supreme Court decides whether to consider the matter for a merits argument. Kaelan Deese, The Washington Examiner, 22 Mar. 2026 Oregon has become a national test case. Louis Sigaud, The Orlando Sentinel, 21 Mar. 2026 See All Example Sentences for test case

Word History

First Known Use

1850, in the meaning defined at sense 1

Time Traveler
The first known use of test case was in 1850

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Cite this Entry

“Test case.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/test%20case. Accessed 27 Mar. 2026.

Legal Definition

test case

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