platinum meaning

Definition of platinum

1. a heavy precious metallic element; grey-white and resistant to corroding; occurs in some nickel and copper ores and is also found native in some deposits

   Synonyms: Pt, atomic number 78

   Type of: noble metal

platinum in a sentence

• Set a diamond in a platinum mounting.
• Platinum is a chemical element with the symbol Pt.
• At the moment, platinum jewellery is in fashion.
• It could've been steel, silver or platinum.
• This isn't a good time to buy platinum.

How to pronounce platinum

platinum is pronounced /ˈplætɪnəm/ in British English and /ˈplætnəm/ in American English. It has 2 syllables, with the stress on the first syllable.