Longman Dictionary of Contemporary English homepage

Date: 1300-1400
Language: Late Latin
Origin: corrosio, from Latin corrodere; CORRODE

corrosion

 noun
     
Related topics: Chemistry
cor‧ro‧sion [uncountable]
HCE the gradual destruction of metal by the effect of water, chemicals etc or a substance such as rust produced by this process:
They are sprayed with oil to prevent corrosion.
Check for signs of corrosion.
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

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