cor·​ro·​sion | \kə-ˈrō-zhən \

Definition of corrosion 

1 : the action, process, or effect of corroding

2 : a product of corroding

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Synonyms & Antonyms for corrosion


attrition, erosion, undermining, waste



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Examples of corrosion in a Sentence

the corrosion of family values that is often brought on by great wealth

Recent Examples on the Web

Nearly $8 million is needed to replace nine acres of plastic panels that make up the roof’s top membrane, while $15 million is needed to repaint and remove corrosion from the steel beams that support the structure. Daniel Beekman, The Seattle Times, "In $180 million ask for public money, Mariners cite retractable roof used 400 times per year," 28 Aug. 2018 The old pipeline was forged using flash welding, which introduces impurities into steel that can cause cracks and corrosion. The Editorial Board, WSJ, "Standing Rock Redux," 22 July 2018 Tip: Remove the batteries from the flashlight and other items to avoid corrosion. Washington Post, "What goes into a go-bag? How to prepare an emergency kit," 12 June 2018 Tanks should be free of dents, corrosion or other damage. Evan Bush, The Seattle Times, "Brinnon cabin fire that killed couple, 3 boys was likely a ‘horrible accident,’ official says," 13 June 2018 If a professional engineer doesn't apply, then the department is allowed to hire someone who has a Level 1 certification or higher from the National Association of Amusement Ride Safety Officials, which also requires the study of corrosion. Laura Hancock,, "Ohio House Bill would toughen amusement ride inspections after deadly Ohio State Fair accident," 3 May 2018 Records compiled by the Center for Biological Diversity and obtained by The Associated Press show state violations ranging from severe corrosion to failed and missing tests required to gauge the strength of wells. Washington Post, "APNewsBreak: California oil firms had nearly 400 violations," 11 Apr. 2018 Some Customers Think So Number of the Day 123,000 The number of Model S cars that Tesla is recalling after discovering that bolt corrosion caused by deicing salts could cause the power steering to fail. Gerard Baker, WSJ, "The 10-Point.," 30 Mar. 2018 These workers also found the still-unknown way to preserve the weapons from corrosion, Sung added. Carol Motsinger,, "This wonder of the world is now in Cincinnati," 20 Apr. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'corrosion.' 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 corrosion

14th century, in the meaning defined at sense 1

History and Etymology for corrosion

Middle English corrosioun, borrowed from Late Latin corrōsiōn-, corrōsiō "act of gnawing," from Latin corrōdere "to gnaw, chew up" + -tiōn-, -tiō, suffix of verbal action — more at corrode

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Statistics for corrosion

Last Updated

24 Nov 2018

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Time Traveler for corrosion

The first known use of corrosion was in the 14th century

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More Definitions for corrosion


cor·​ro·​sion | \kə-ˈrō-zhən \

Kids Definition of corrosion

: the process or effect of destroying, weakening, or wearing away little by little


cor·​ro·​sion | \kə-ˈrō-zhən \

Medical Definition of corrosion 

1 : the action, process, or effect of corroding arterial corrosion that characterizes arteriosclerosisJournal of the American Medical Association

2 : a study specimen of an organ or other structure prepared by injection of hollow parts (as blood vessels) with a plastic and subsequent removal of the surrounding tissue by corrosion

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Comments on corrosion

What made you want to look up corrosion? Please tell us where you read or heard it (including the quote, if possible).


living or existing for a long time

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