platinum black
noun Chemistry.
a black powder consisting of very finely divided metallic platinum, used as a catalyst, especially in organic synthesis.
Origin of platinum black
First recorded in 1850–55
Words nearby platinum black
platinocyanide,
platinoid,
platinotype,
platinous,
platinum,
platinum black,
platinum blonde,
platinum disc,
platinum metal,
platinum-blond,
platitude
British Dictionary definitions for platinum black
platinum black
noun
chem
a black powder consisting of very finely divided platinum metal. It is used as a catalyst, esp in hydrogenation reactions