👉 Tarnishable refers to a material or substance that is prone to tarnishing or corrosion due to exposure to environmental conditions such as acid rain, salt water, or other substances. This can occur when the material has been exposed to an acidic environment, resulting in the formation of a layer of oxide on its surface. Tarnishes can be caused by a variety of factors, including chemical reactions, UV radiation, and physical damage from abrasion or wear.