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corrode (verb) destroy by chemical action (metals, etc.).
When a substance corrodes or something corrodes it, it is gradually destroyed or worn away by chemical action including that of water or atmosphere. Acid corrodes metals, that is, certain acids wear away or destroy gradually certain metals if they happen to be in contact with the acids. Rust corrodes iron and steel. Because of exposure to moisture, iron and steel get rusted, and destroyed over a period. To lessen something is also to corrode. The erratic power supply corrodes our confidence in the power company, if we do not rely on the company for regular power supply.
- The pipe work supplying gas to the city's consumers is of special alloy, so there is no fear that either the gas or any other substance having contact with the pipe work might corrode it leading to a gas leak.
- Passion for money and the craze for material possessions have corroded human values to the extent that none cares about their near and dear and are devoid of human feelings.