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

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 The fissures, ground deformation, and abundant volcanic gases indicate eruptions on the eastern flank of Kilauea are likely to continue. Caleb Jones,, "New Hawaii volcano fissure spurs more evacuations," 13 May 2018 Such a concept had the power to explain the significance of the mobile belt and the major fault zones in it — the structures reflected the massive deformation expected as a result of two continents colliding head-on. Longreads, "The Quest for the Collision Zone: An Arctic Expedition," 12 Mar. 2018 According to Padula, this allows for 30 percent more deformation without permanent changes or damage. Tony Markovich, Car and Driver, "NASA’s Airless Tire for Mars Missions Has a Great Memory [Video]," 1 Feb. 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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The first known use of deformation was in the 15th century

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to enclose within walls

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