Ag - a soft white precious univalent metallic element having the highest electrical and thermal conductivity of any metal; occurs in argentite and in free form; used in coins and jewelry and tableware and photographynoble metal - any metal that is resistant to corrosion or oxidation argentite - a valuable silver ore consisting of silver sulfide (Ag2S) coin silver - a silver of the degree of purity established for making legal silver coins conductor - a substance that readily conducts e.g. electricity and heat |