malformation

noun

mal·​for·​ma·​tion ˌmal-fȯr-ˈmā-shən How to pronounce malformation (audio)
-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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Both are sources of vitamin B9 and essential nutrients that help prevent neural tube defects (NTDs), a type of congenital malformation. Jennifer Lefton, Ms, Rd/n, Cnsc, Fand, Verywell Health, 7 Apr. 2025 Vasquez Sura gives birth to a son who is later diagnosed with microtia, a congenital malformation of the external ear. George Petras, USA Today, 7 Apr. 2025 The campaign is underpinned by survey research involving those living with facial differences arising from scarring, burns, reconstructive surgery, craniofacial conditions and various other congenital facial malformations. Gus Alexiou, Forbes, 27 Feb. 2025 But rates of congenital malformations and low birth weights — the two leading causes of infant death in the US — both ticked up. Deidre McPhillips, CNN, 19 Dec. 2024 See All Example Sentences for malformation

Word History

First Known Use

1800, in the meaning defined above

Time Traveler
The first known use of malformation was in 1800

Browse Nearby Words

Cite this Entry

“Malformation.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/malformation. Accessed 23 Apr. 2025.

Kids Definition

malformation

noun
mal·​for·​ma·​tion ˌmal-fȯr-ˈmā-shən How to pronounce malformation (audio)
-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- How to pronounce malformation (audio)
: irregular, anomalous, abnormal, or faulty formation or structure
congenital malformations
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