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

The goal is to detect early signs of diseases such as cancer, heart disease and other abnormalities. — Melissa Rudy, FOXNews.com, 20 July 2026

That can lead to abnormalities in the heart and blood vessels that later result in a tear or dissection in the aorta. — Elizabeth Cooney, STAT, 15 July 2026

The testing may identify certain abnormalities before symptoms emerge. — Melinda Sheckells, HollywoodReporter, 15 July 2026

Falat said that patients suffering from heat stroke have a core body temperature of 40 degrees Celsius — more than 104 degrees Fahrenheit — or higher, and are showing signs neurological abnormalities like confusion or unresponsiveness. — Danielle J. Brown, Baltimore Sun, 10 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