cor·​ro·​sion | \ kə-ˈrō-zhən How to pronounce corrosion (audio) \

Definition of corrosion

1 : the action, process, or effect of corroding
2 : a product of corroding

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Synonyms & Antonyms for corrosion



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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 Under the terms of an agreement with the state, Enbridge is required to maintain a multilayered coating on the pipeline to protect it from corrosion and to ensure that the pipeline has physical supports that are no more than 75 feet apart. Veronica Penney, New York Times, "Time Runs Out for a U.S.-Canada Oil Pipeline," 17 Nov. 2020 Rust is a kind of corrosion that affects iron and steel. Bob Beacham,, "The best rust prevention spray," 12 Dec. 2020 Prewar buildings can be nearly bombproof, but their cast-iron sewers are full of corrosion, their brass plumbing brittle and cracked. Burkhard Bilger, The New Yorker, "The Art of Building the Impossible," 23 Nov. 2020 Observatory staff regularly inspect the towers, cables, and platform, looking for any signs of weakening or corrosion caused by the salty, tropical air. Nadia Drake, National Geographic, "Iconic radio telescope in Puerto Rico is at risk of collapsing," 12 Nov. 2020 The screws on your scope rings, and even the guard screws that hold your rifle together, can be vulnerable to rust and corrosion. John B. Snow, Outdoor Life, "A Handy Pre-Season Checklist for Tuning Your Big-Game Rifle," 22 Oct. 2020 Pipes and valves on the four-decade-old vessel have been damaged by corrosion and its cooling system has been taking on seawater in recent months, Western officials said. Sune Engel Rasmussen And Stephen Kalin, WSJ, "Decaying Yemen Oil Tanker at Risk of Spilling into Red Sea," 2 Oct. 2020 This can happen when rubber blades get dried out due to corrosion or direct exposure to sunlight. Sian Babish,, "The best windshield wiper of 2020," 1 Oct. 2020 However, their main purpose is to keep surfaces clean by inhibiting the formation of high-temperature deposits, rust, and corrosion. Paul Weissler, Popular Mechanics, "How to Pick the Right Motor Oil for Your Car," 31 Aug. 2020

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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Time Traveler for corrosion

Time Traveler

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

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Statistics for corrosion

Last Updated

10 Jan 2021

Cite this Entry

“Corrosion.” Dictionary, Merriam-Webster, Accessed 16 Jan. 2021.

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More Definitions for corrosion


cor·​ro·​sion | \ kə-ˈrō-zhən How to pronounce corrosion (audio) \

Kids Definition of corrosion

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


cor·​ro·​sion | \ kə-ˈrō-zhən How to pronounce corrosion (audio) \

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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