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

For instance, cloning is an imperfect science and can often create offspring with genetic abnormalities. — Jessie Yeung, CNN Money, 25 July 2026

The round-bodied internet darling was probably born with a spinal abnormality, a wildlife veterinarian says. — Kyle Melnick, Washington Post, 23 July 2026

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

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