1. A state of deterioration in metals caused by oxidation or chemical action
   "The corrosion on the old car's body was beyond repair"
    
2. Wearing away by chemical action
   "The corrosion of the metal pipes led to water contamination";
   - corroding, erosion

Derived forms: corrosions

Type of: chemical action, chemical change, chemical process, deterioration, impairment

Encyclopedia: Corrosion