misdiagnosis

noun

mis·​di·​ag·​no·​sis ˌmis-ˌdī-ig-ˈnō-səs How to pronounce misdiagnosis (audio)
-əg-
plural misdiagnoses ˌmis-ˌdī-ig-ˈnō-ˌsēz How to pronounce misdiagnosis (audio)
-əg-
: an incorrect diagnosis
Misdiagnosis can easily occur unless the veterinarian is alert to the possibility of Lyme disease.Suzanne Clothier et al.
The court also stated that experts can be sued for negligence resulting from their misdiagnoses.Mark Hansen

Examples of misdiagnosis 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.
For Black patients who already navigate a healthcare system shaped by discrimination, under-treatment, and misdiagnosis, lack of transparency can be downright harmful. Essence, 1 Jan. 2026 Many factors contribute to this disparity, including systemic racism, exposure to violence, misdiagnosis and a lack of access to care. Lisa Rab, USA Today, 14 Dec. 2025 Social media influencers can encourage self-diagnosis — implicitly or explicitly — but the practice only increases the chances of a misdiagnosis. Big Think, 27 Nov. 2025 As a result, many experts question whether the costs of mass screening programs outweigh the benefits, due to the risk of misdiagnosis and unnecessary treatments. Jack Guy, CNN Money, 24 Nov. 2025 See All Example Sentences for misdiagnosis

Word History

First Known Use

1884, in the meaning defined above

Time Traveler
The first known use of misdiagnosis was in 1884

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Cite this Entry

“Misdiagnosis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/misdiagnosis. Accessed 10 Jan. 2026.

Medical Definition

misdiagnosis

noun
mis·​di·​ag·​no·​sis (ˌ)mis-ˌdī-ig-ˈnō-səs How to pronounce misdiagnosis (audio)
plural misdiagnoses -ˌsēz How to pronounce misdiagnosis (audio)
: an incorrect diagnosis
Last Updated: - Updated example sentences
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