abnormality

noun

ab·​nor·​mal·​i·​ty ˌab-nər-ˈma-lə-tē How to pronounce abnormality (audio)
-(ˌ)nȯr-
plural abnormalities
1
: something abnormal
2
: the quality or state of being abnormal

Examples of abnormality in a Sentence

The test results showed several genetic abnormalities. There was some abnormality in his vision.
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 term is often used interchangeably with congenital heart defect, which refers specifically to a structural abnormality of the heart that is present at birth and needs medical or surgical intervention. Marcus K. Dowling, The Tennessean, 2 July 2025 Pulmonic stenosis is a congenital heart defect where the flow of blood from the heart to the lungs is obstructed, and a grade VI murmur is the most intense type of heart murmur, typically indicating a significant abnormality. Lydia Patrick, MSNBC Newsweek, 21 June 2025 Neurological tests: These tests help your healthcare provider check for abnormalities in your brain function. Sherri Gordon, Health, 8 June 2025 Surgical removal of the tumor or blood vessel abnormality may prevent seizure recurrence. Heidi Moawad, Verywell Health, 5 June 2025 See All Example Sentences for abnormality

Word History

Etymology

abnormal entry 1 + -ity

First Known Use

1847, in the meaning defined at sense 1

Time Traveler
The first known use of abnormality was in 1847

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Cite this Entry

“Abnormality.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/abnormality. Accessed 9 Jul. 2025.

Kids Definition

abnormality

noun
ab·​nor·​mal·​i·​ty ˌab-nər-ˈmal-ət-ē How to pronounce abnormality (audio)
-(ˌ)nȯr-
plural abnormalities
1
: the state of being abnormal
2
: something abnormal

Medical Definition

abnormality

noun
ab·​nor·​mal·​i·​ty ˌab-nər-ˈmal-ət-ē, -(ˌ)nȯr- How to pronounce abnormality (audio)
plural abnormalities
1
: the quality or state of being abnormal
2
: something abnormal
brain-wave abnormalities

More from Merriam-Webster on abnormality

Last Updated: - Updated example sentences
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