Word forms: corrodes
1. ergative verb & verb
If metal or stone corrodes, or is corroded, it is gradually destroyed by a chemical or by rust. [V] ⇒ He has devised a process for making gold wires which neither corrode nor oxidise. [be V-ed] ⇒ Engineers found the structure had been corroded by moisture. [V n] ⇒ Acid rain destroys trees and corrodes buildings.
graded adjective & adjective ⇒ The investigators found that the underground pipes were badly corroded. 2. verb To corrode something means to gradually make it worse or weaker. [literary] [V n] ⇒ Suffering was easier to bear than the bitterness he felt corroding his spirit. [V n] ⇒ He warns that corruption is corroding Russia.
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