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

Synonyms & Antonyms for corrosion



Visit the Thesaurus for More 

Examples of corrosion in a Sentence

the corrosion of family values that is often brought on by great wealth
Recent Examples on the Web The reddish-brown color of the corrosion suggested that iron might be present, said Katherine Ridgway, a state archeological conservator. Washington Post, 22 Dec. 2021 Boca Raton is currently prioritizing buildings by the ocean and Intracoastal Waterway, where saltwater corrosion could be an issue, Thomson said. Wells Dusenbury,, 25 Oct. 2021 Inspect those contacts carefully for any signs of corrosion. Mike Allen, Popular Mechanics, 7 July 2021 But other structural engineers said that some level of corrosion was common in old buildings and was unlikely to bring a building down on its own. New York Times, 27 June 2021 The Fifty Fathoms Tourbillion 8 Jours watch in titanium watch allows for a lighter, more comfortable wear—along with greater resistance to shocks, pressure and corrosion. Demetrius Simms, Robb Report, 8 Dec. 2021 The company has contracts to detect corrosion on Navy ships and help maintain Air Force jets. Tom Simonite, Wired, 18 Nov. 2021 The effect is the same regardless: The impossibility of solitude entails the corrosion of personality, the transformation of subjects from opaque actors into transparent vessels through which the act of observation passes as light through a prism. Jake Bittle, The New Republic, 12 Oct. 2021 Earlier this month, the Environmental Protection Agency instructed the city to improve corrosion control, repair filters at its treatment plant and better notify residents of lead exceedances. David Eggert, Detroit Free Press, 1 Dec. 2021

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.

See More

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

Learn More About corrosion

Time Traveler for corrosion

Time Traveler

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

See more words from the same century

Dictionary Entries Near corrosion




See More Nearby Entries 

Statistics for corrosion

Last Updated

10 Jan 2022

Cite this Entry

“Corrosion.” Dictionary, Merriam-Webster, Accessed 18 Jan. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

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

More from Merriam-Webster on corrosion

Nglish: Translation of corrosion for Spanish Speakers

Britannica English: Translation of corrosion for Arabic Speakers Encyclopedia article about corrosion


Test Your Vocabulary

Difficult Spelling Words Quiz

  • alphabet pasta spelling help
  • Which is the correct spelling?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

Universal Daily Crossword

A daily challenge for crossword fanatics.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!