Pd

a silver-white metallic element of the platinum group that resembles platinum; occurs in some copper and nickel ores; does not tarnish at ordinary temperatures and is used (alloyed with gold) in jewelry

白金に似た白金族の銀白色の金属元素；一部の銅鉱石やニッケル鉱石中に存在する；常温で変色せず、（金との合金として）宝飾品に用いられる