Definition of Palladium 1. 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 Noun Synonyms for word "palladium" Semanticaly linked words with "palladium" Hyponims for word "palladium" has derived form Pallas etymology dipalladium etymology palladiferous etymology radiopalladium etymology paladium etymological origin of Pallas etymologically related Pallas is derived from dioxide of palladium is derived from pallad- is derived from palladia is derived from palladic is derived from palladiferous is derived from palladio- is derived from palladious is derived from palladium chloride is derived from palladium cyanide is derived from palladium dichloride is derived from palladium dinitrate is derived from palladium hydride is derived from palladium nitrate is derived from palladiumise is derived from palladiumize is derived from palladous is derived from protoxide of palladium