from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. The act or process of corroding.
  • n. The condition produced by corroding.
  • n. A substance, such as rust, formed by corroding.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The act of corroding or the condition so produced.
  • n. A substance (such as rust) so formed.
  • n. Erosion by chemical action, especially oxidation.
  • n. The gradual destruction or undermining of something.

from the GNU version of the Collaborative International Dictionary of English

  • n. The action or effect of corrosive agents, or the process of corrosive change.

from The Century Dictionary and Cyclopedia

  • n. Literally, the act or process of eating or gnawing away; hence, the process of wearing away, disintegrating, or destroying by the gradual separation of small parts or particles, especially by the action of chemical agents, as acids: often used figuratively of the destructive influence of care, grief, time, etc.
  • n. In geology, the solution and removal of rocks, usually in water; the eating away by fusion and absorption of a solid mass of rock or of a mineral which is inclosed in a molten magma.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a state of deterioration in metals caused by oxidation or chemical action
  • n. erosion by chemical action


Middle English corosioun, corrosion of tissue, from Old French corrosion, from Medieval Latin corrōsiō, corrōsiōn-, the act of gnawing, from Latin corrōsus, past participle of corrōdere, to gnaw away; see corrode.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From Old French corrosion, or its source, Late Latin corrōsiōnem, accusative singular of corrōsiō ("gnawing away, corroding"), from Latin corrōdō ("gnaw away, corrode"). (Wiktionary)



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