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

In addition to head trauma, high blood pressure, tobacco and alcohol use, other causes of brain bleeds include aneurysms, arteriovenous malformations, blood thinners, brain tumors, bleeding disorders and the use of drugs such as cocaine. —Mill Etienne, Forbes, 11 Dec. 2024

Other babies were missing key brain structures or had other malformations. —Jess Craig, Vox, 7 Dec. 2018

The outlet reported that Remley fell ill in June 2022 and was later diagnosed with Chiari malformation. —Raven Brunner, People.com, 29 Sep. 2024

Then there are phthalates, plastic-softening chemicals added to food containers that have been linked to genital malformations in boys and lower sperm counts and testosterone levels in men. —Michael Hawthorne, Chicago Tribune, 26 Sep. 2024

Word History

First Known Use

1800, in the meaning defined above

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