Definition of platinum metals in English:

platinum metals

plural noun

Chemistry
  • The six metals platinum, palladium, ruthenium, osmium, rhodium, and iridium, which have similar properties and tend to occur together in nature.

    • ‘The catalytic converter mixes these gases with air and then passes them over a catalyst made of rhodium and platinum metals.’
    • ‘He had perfected the powder method of preparing malleable platinum and established the platinum metals industry.’
    • ‘Tennant was studying a new mineral that contained a number of platinum metals and discovered a black powder that other chemists had also seen, but had not analyzed.’
    • ‘The platinum metals tend to occur together in nature and are relatively difficult to separate from each other.’
    • ‘The rising gold price is still having a knock-on effect on other commodities - silver rose to an 18-year high on Friday, while platinum metals were also rising.’