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.
Advances in next generation sequencing (NGS) technologies have enabled cancer research innovations like improvements in minimal residual disease (MRD) identification and the discovery of drugs that target genetic tumor abnormalities. Linda De Jesus, Forbes.com, 30 June 2025 Nonetheless, early ultrasounds flagged multiple concerns: small femurs, club feet and an umbilical vein abnormality. Ashley Vega, People.com, 24 June 2025 The researchers will follow study participants for 12 to 18 months after their scan to see whether abnormalities are confirmed as cancer. Claire Bugos, Verywell Health, 18 June 2025 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 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

Browse Nearby Words

Cite this Entry

“Abnormality.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/abnormality. Accessed 21 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
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!