[ 'platɪnəm ]
■ noun
1》 a precious silvery-white metal, the chemical element of atomic number 78, used in jewellery, electrical contacts, laboratory equipment, and industrial catalysts. (Symbol: Pt )
2》 [as modifier ] greyish-white or silvery like ~.
Origin
C19: alt. of earlier platina , from Sp., dimin. of plata 'silver'.