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

Typically, a patient and provider will closely monitor the patient’s menstrual cycle to identify potential abnormalities. —Emma Kennedy, The Conversation, 12 Dec. 2025

The report said there was no evidence of arterial narrowing, inflammation, clotting or abnormalities in the heart, major blood vessels or any abdominal organs, all of which appeared healthy and functioning within normal limits. —Robert Birsel, MSNBC Newsweek, 10 Dec. 2025

No evidence of arterial narrowing impairing blood flow or abnormalities in the heart or major vessels. —Christian Datoc, The Washington Examiner, 1 Dec. 2025

There is no evidence of arterial narrowing impairing blood flow or abnormalities in the heart or major vessels. —Cnn.com Wire Service, Mercury News, 1 Dec. 2025

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