abnormality

noun

ab·​nor·​mal·​i·​ty ˌab-nər-ˈma-lə-tē 

-(ˌ)nȯr-

plural abnormalities

1

: something abnormal

2

: the quality or state of being abnormal

Synonyms of abnormality

• anomaly
• mutation

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

Some of the first signs could be abnormalities in your liver tests. — Alexandra Frost, USA Today, 7 Aug. 2026

Hamberger Medical reported a high level of agreement between the two systems when checking for AFib and other rhythm abnormalities. — Kurt Knutsson, FOXNews.com, 7 Aug. 2026

This is the first time that an AI system has detected a new abnormality in EKGs that appears correlated with cardiac risk and is detectable visually by a human physician. — Paul Hsieh, Forbes.com, 31 July 2026

Compared to younger women, older moms are at higher risk of complications like preeclampsia, gestational diabetes, placental abnormalities, miscarriage chromosomal conditions and cesarean delivery. — Helen Carefoot, Flow Space, 29 July 2026

Word History

Etymology

abnormal entry 1 + -ity

First Known Use

1847, in the meaning defined at sense 1

Rhymes for abnormality

• cardinality
• commonality
• communality
• cordiality
• corporeality
• criminality
• criticality
• functionality
• generality
• geniality
• hospitality
• illegality

Kids Definition

abnormality

noun

ab·​nor·​mal·​i·​ty ˌab-nər-ˈmal-ət-ē 

-(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- 

plural abnormalities

1

: the quality or state of being abnormal

2

: something abnormal

brain-wave abnormalities