become destroyed by water, air, or a corrosive such as an acid; "The metal corroded"; "The pipes rusted"水、空気、または酸のような腐食物で損なわれる腐食
cause to deteriorate due to the action of water, air, or an acid; "The acid corroded the metal"; "The steady dripping of water rusted the metal stopper in the sink"水、空気または酸の活動によって劣化するようになる腐食させる