de·​for·​ma·​tion | \ ˌdē-ˌfȯr-ˈmā-shən, ˌde-fər- \

Definition of deformation

1 : alteration of form or shape also : the product of such alteration
2 : the action of deforming : the state of being deformed
3 : change for the worse

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Other Words from deformation

deformational \ -​shə-​nᵊl \ adjective

Examples of deformation in a Sentence

the catastrophic deformation of the steel girders under the enormous weight of the bridge

Recent Examples on the Web

One possibility is that liquid oxygen could have pooled in such a deformation and became solid. Joe Pappalardo, Popular Mechanics, "SpaceX and NASA Reach Agreement on Astronaut Safety," 20 Aug. 2018 Babies were randomly assigned to receive either helmet therapy or to just let the skull deformation take its natural course. Korin Miller, SELF, "My Son, Like Chrissy Teigen’s, Wore a Corrective Helmet as a Baby for a Flat Spot," 4 Dec. 2018 The test measures the resistance of metal to force using the deformation or depth of indentation that occurs when a penetrator (typically a diamond cone) is pressed into the material. Francine Maroukian, Popular Mechanics, "How To Buy Kitchen Knives Like a Pro," 24 Oct. 2018 Five sets of human remains with visible bone deformations were selected from a cemetery at the Convent of Santa Isabel, a historic site in Mexico City run by nuns of the Franciscan order from 1681 to 1861. National Geographic, "Syphilis DNA Pulled From Colonial-Era Bones," 21 June 2018 Rather, judging by the deformation of the conical, rifled bullet, the slug went in at an angle, embedding itself sideways in the man’s upper femur and precipitating a nasty longitudinal fracture down the bone’s length. Ryan P. Smith, Smithsonian, "Newly Unearthed Civil War Bones Speak Silently to the Grim Aftermath of Battle," 20 June 2018 The mapping also allows a surgeon see something called brainshift — the deformations that happen in the brain from the impact of surgery — in real time. Dominic Smith, STAT, "WATCH: Surgeons create personalized brain maps to guide safer surgeries," 1 June 2018 Some volcanoes or volcanic systems have earthquake activity, ground deformation. Adam Rogers, WIRED, "How Volcanologists Predicted Kilauea’s Explosive Eruption," 17 May 2018 Researchers from the Max Planck Institute for the Science of Human History, EPFL Lausanne, the University of Zurich and several other institutions analyzed remains from 90 people that have deformations consistent with leprosy. Brigit Katz, Smithsonian, "Did Leprosy Originate in Europe?," 14 May 2018

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

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First Known Use of deformation

15th century, in the meaning defined at sense 1

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Last Updated

13 Jan 2019

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

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someone who never drinks alcohol

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