1. Plural of palladium; a rare, silvery-white metallic chemical element (symbol Pd) used in jewelry, catalysts, and electronics.
Usage: chemistry; material science
2. Plural of palladium; something that provides protection or safety; a safeguard or defense.
Usage: figurative; formal

Examples

• Palladiums are widely used in catalytic converters for automobiles.
• The treaty served as one of the palladiums of international peace.
• Jewelry makers often blend palladiums with gold to create white gold alloys.
• Industrial applications of palladiums include hydrogen purification and electronics manufacturing.
• The constitution was viewed as a palladium of civil liberties.
• Palladiums have become increasingly valuable in the technology sector.