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 WordNet 3.0 & Open English WordNet

Platinum is a chemical element with the symbol Pt and atomic number 78. Wikipedia

Chemical element with symbol Pt and atomic number 78. Wikipedia Disambiguation

chemical element with symbol Pt and atomic number 78 Wikidata

A ductile malleable silvery-white metallic element very resistant to heat and chemicals. It occurs free and in association with other platinum metals, especially in osmiridium; used in jewellery, laboratory apparatus, electrical contacts, dentistry, electroplating, and as a catalyst. OmegaWiki

The chemical element with atomic number 78 and symbol Pt; a dense, malleable, ductile, highly unreactive, silverish-white transition metal of great value. Wiktionary

Metal. Wiktionary (translation)