[ kuh-roh-zhuh n ]
/ kəˈroʊ ʒən /


the act or process of corroding; condition of being corroded.
a product of corroding, as rust.

Origin of corrosion

1350–1400; Middle English (< Middle French) < Late Latin corrōsiōn- (stem of corrōsiō) a gnawing away, equivalent to Latin corrōs(us), past participle of corrōdere to corrode + -iōn- -ion

Related forms

cor·ro·sion·al, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for corrosion

British Dictionary definitions for corrosion


/ (kəˈrəʊʒən) /


a process in which a solid, esp a metal, is eaten away and changed by a chemical action, as in the oxidation of iron in the presence of water by an electrolytic process
slow deterioration by being eaten or worn away
the condition produced by or the product of corrosion
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Science definitions for corrosion


[ kə-rōzhən ]

The breaking down or destruction of a material, especially a metal, through chemical reactions. The most common form of corrosion is rusting, which occurs when iron combines with oxygen and water.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.