7 letters · 10 points in Scrabble
verb cause to deteriorate due to the action of water, air, or an acid
verb become destroyed by water, air, or a corrosive such as an acid
originFrom Middle English corrōden, that borrowed from Old French corroder or directly from Latin corrōdere (“to gnaw”), from con- (“completely”) + rōdere (“to gnaw”).
Etymology from Wiktionary, CC BY-SA 3.0