de·​for·​mi·​ty | \ di-ˈfȯr-mə-tē How to pronounce deformity (audio) , dē- \
plural deformities

Definition of deformity

1 : the state of being deformed
2 : imperfection, blemish: such as
a : a physical blemish or distortion : disfigurement
b : a moral or aesthetic flaw or defect

Examples of deformity in a Sentence

a disease causing deformity of the spine a primitive culture that cast aside infants born with deformities, allowing them to die of exposure to the elements
Recent Examples on the Web The company hopes to gain approval for the procedure and aid others born with microtia, a rare congenital deformity where one or both outer ears are absent or underdeveloped. Giovana Gelhoren,, 2 June 2022 This is a great example of a gall, which is a tissue deformity on a plant caused by either insects, mites, fungi, bacteria or nematodes. Miri Talabac, Baltimore Sun, 26 May 2022 Herber had a birth deformity that led to an amputation near her right ankle at the age of 2. Madeline Mitchell, The Enquirer, 11 Mar. 2022 This addition often pushes into the back the Achilles insertion and causes chronic inflammation, particularly if a Haglund’s deformity is present. Thomas C. Michaud, Outside Online, 10 Sep. 2019 Ray had cancer and Maria was dealing with paralysis on one side of her body due to a latent spinal deformity. Olivia Solon, NBC News, 8 Dec. 2021 Surgery as an infant left him with a small leak in one valve and a slight deformity in another. Erin Alberty, The Salt Lake Tribune, 7 Nov. 2021 Unfortunately, Campbell developed severe knee arthritis with subsequent deformity over the years. Prem Ramkumar, Forbes, 14 Nov. 2021 That or what’s known as a saddle-nose deformity, where the bridge of the nose dips because of the destruction of the cartilage there. New York Times, 10 Nov. 2021 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'deformity.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of deformity

15th century, in the meaning defined at sense 1

History and Etymology for deformity

Middle English deformite, from Middle French defformeteit, from Latin deformitat-, deformitas, from deformis deformed, from de- + forma

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The first known use of deformity was in the 15th century

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Last Updated

15 Jun 2022

Cite this Entry

“Deformity.” Dictionary, Merriam-Webster, Accessed 27 Jun. 2022.

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More Definitions for deformity


de·​for·​mi·​ty | \ di-ˈfȯr-mə-tē How to pronounce deformity (audio) \
plural deformities

Kids Definition of deformity

1 : the condition of having a physical flaw
2 : a flaw in something and especially in the body of a person or animal


de·​for·​mi·​ty | \ di-ˈfȯr-mət-ē How to pronounce deformity (audio) \
plural deformities

Medical Definition of deformity

1 : the state of being deformed
2 : a physical blemish or distortion deformities caused by thalidomide

More from Merriam-Webster on deformity

Nglish: Translation of deformity for Spanish Speakers

Britannica English: Translation of deformity for Arabic Speakers


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