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.
Pandemics corrode citizens' faith in government — especially, and not surprisingly, among impressionable young people. Erin Doherty, Axios, 9 Mar. 2025 Put simply, Russian control over any part of Ukraine subverts and corrodes Ukrainian sovereignty everywhere. Nataliya Gumenyuk, Foreign Affairs, 12 Feb. 2025 Toss in the Buffalo Sabres slogging toward a 14th straight season sans playoffs, which would tie the New York Jets for the longest active drought among the big four North American sports, and the mood corrodes further. Tim Graham, The Athletic, 22 Jan. 2025 To prevent the sweat and oils in your hands from corroding or breaking down rubber weights over time, wipe them down with warm water mixed with a little bit of soap. Andrea Beck, Better Homes & Gardens, 15 Feb. 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 19 Mar. 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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