malformation

noun

mal·​for·​ma·​tion ˌmal-fȯr-ˈmā-shən 

-fər-

: irregular, anomalous, abnormal, or faulty formation or structure

Examples of malformation in a Sentence

The condition is marked by malformation of the spine.

She underwent surgery to correct a heart malformation.

Recent Examples on the Web

Guild’s Jonathan Larson Musical Theater Fellowship and the vice president of the advocacy group Black Broadway Men United, died Thursday, March 6, at a hospital in Newark, New Jersey, of complications from a cerebral arteriovenous malformation. —Greg Evans, Deadline, 14 Mar. 2025

Kearney suffered a cerebral arteriovenous malformation on Jan. 8. —Mike Barnes, The Hollywood Reporter, 14 Mar. 2025

These are typically due to high blood pressure, aneurysms, head trauma, or an abnormal tangle of vessels known as arteriovenous malformation. —Mill Etienne, Forbes, 11 Dec. 2024

This suggests women are delivering more babies with severe congenital malformations who have no hope of survival beyond a few hours, days or, at most, a few weeks. —Almut Winterstein, The Conversation, 30 Jan. 2025

Word History

First Known Use

1800, in the meaning defined above

Rhymes for malformation

• abdication
• aberration
• abjuration
• abnegation
• abrogation
• acceptation
• acclamation
• acclimation
• accusation
• activation
• actuation
• acylation

Kids Definition

malformation

noun

mal·​for·​ma·​tion ˌmal-fȯr-ˈmā-shən 

-fər-

: a misshapen, abnormal, or faulty formation or structure

malformation of the knee joint

Medical Definition

malformation

noun

mal·​for·​ma·​tion ˌmal-fȯr-ˈmā-shən, -fər- 

: irregular, anomalous, abnormal, or faulty formation or structure

congenital malformations