platinum

/ˈplætɪnəm/ /ˈplætɪnməm/

Definitions

1. noun

a heavy, rare, and highly valued silver-white metal used in jewelry, coins, and catalytic converters.

“The wedding ring was made of platinum, which made it extremely durable and long-lasting.”

2. adjective

relating to or consisting of platinum or being a platinum alloy.

“The platinum credit card offered its holder exclusive benefits and rewards.”

3. chemistry

the chemical element of the atomic number 78, a heavy, malleable, and ductile white metal used as a catalyst and in jewelry.

“Platinum is an essential component in many industrial processes due to its high melting point and catalytic properties.”

Synonyms

  • rhodium
  • silver

Antonyms

  • base metal
  • tin