abnormality

noun

ab·​nor·​mal·​i·​ty ˌab-nər-ˈma-lə-tē How to pronounce abnormality (audio)
-(ˌ)nȯr-
plural abnormalities
Synonyms of abnormalitynext
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.
If ingested in large enough quantities, this plant also can cause heart rhythm abnormalities, seizures and death. Arricca Elin Sansone, Southern Living, 12 Feb. 2026 At Function, in addition to preventative, full-body MRI screening to detect early stage cancers, aneurysms and abnormalities, patients can also seek out extensive panels of blood tests to interpret all their results with proper perspective. David Oliver, USA Today, 11 Feb. 2026 The company will then temporarily shut the reactor on February 20, or later, to check for any abnormalities before undergoing a final inspection by the Nuclear Regulation Authority. Georgina Jedikovska, Interesting Engineering, 10 Feb. 2026 Meanwhile, other work has shown that people with psychopathy, which often aligns with immoral behavior, have abnormalities in their amygdala and the orbitofrontal cortex regions that are directly connected by the uncinate fasciculus. Christopher M. Filley, The Conversation, 3 Feb. 2026 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 17 Feb. 2026.

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

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