corrode

verb

cor·​rode kə-ˈrōd How to pronounce corrode (audio)
corroded; corroding

transitive verb

1
: to eat away by degrees as if by gnawing
especially : to wear away gradually usually by chemical action
the metal was corroded beyond repair
2
: to weaken or destroy gradually : undermine
manners and miserliness that corrode the human spiritBernard De Voto
corrodible adjective

Did you know?

Corrode comes from Latin corrodere ("to gnaw to pieces"), a combination of the prefix "cor-" (used here as an intensifier with the meaning of "completely") and the verb "rodere" ("to gnaw"). At one time, "corrode" was used to literally indicate the action of gnawing away, as in "woodworms corroded the wood." But it is the more figurative senses from the action of gnawing or eating away that have persisted, as in "salt water corroded the iron" or "graphic content on television and the Internet is corroding the moral fabric of society."

Examples of corrode in a Sentence

Rainwater may corrode the steel containers. Over time, the pipes become corroded and need to be replaced. After a few weeks in the ocean, the boat began to corrode. Years of lies and secrets had corroded their relationship.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Judicial deference has corroded the constitutional framework meant to hold our government accountable. Jon Riches, Oc Register, 27 June 2025 An appeals court said residents can pursue a class-action lawsuit against the city of Miramar and a consultant over water that allegedly corroded copper pipes at homes. News Service Of Florida, Sun Sentinel, 7 May 2025 Heavy metal pots are corroded almost to the point of disintegration, while nearby playing cards — the four of hearts, ace of spades and nine of diamonds — appear untouched. Jordan Runtagh, People.com, 6 July 2025 The Trump administration’s proximity to conspiracy theorizing also corrodes its relationship to intelligence. David V. Gioe, Foreign Affairs, 2 July 2025 See All Example Sentences for corrode

Word History

Etymology

Middle English corroden, borrowed from Latin corrōdere "to gnaw, chew up," from cor-, variant before r of com- com- + rōdere "to gnaw, nibble, eat away" — more at rodent

First Known Use

14th century, in the meaning defined at transitive sense 1

Time Traveler
The first known use of corrode was in the 14th century

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Cite this Entry

“Corrode.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/corrode. Accessed 29 Jul. 2025.

Kids Definition

corrode

verb
cor·​rode kə-ˈrōd How to pronounce corrode (audio)
corroded; corroding
: to eat or be eaten away by degrees as if by gnawing
a bridge corroded by rust

Medical Definition

corrode

verb
cor·​rode kə-ˈrōd How to pronounce corrode (audio)
corroded; corroding

transitive verb

: to eat away by degrees as if by gnawing
especially : to wear away gradually usually by chemical action

More from Merriam-Webster on corrode

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