platinum group
Refers to the group of six platinum-group metals: platinum, palladium, rhodium, iridium, ruthenium, and osmium. Used in chemistry, materials science, and industrial contexts.
Platinum group elements are widely used as catalysts.
This ore contains platinum group metals.
platinum group metals; platinum group elements
Compound of 白金 (platinum) + 族 (group, family). The term is a direct calque of the English 'platinum group'.