corroded

(verb) cause to deteriorate due to the action of water, air, or an acid. Synonyms: corrode, eat, rust. Examples: "The acid corroded the metal." "The steady dripping of water rusted the metal stopper in the sink."

(verb) become destroyed by water, air, or a corrosive such as an acid. Synonyms: corrode, rust. Examples: "The metal corroded." "The pipes rusted."

(adj) eaten away as by acid or oxidation.