platinum

Từ điển WordNet v3.1 - WordNet Dictionary

noun

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 (Freq. 3)
• Syn:
Pt, atomic number 78
• Hypernyms:
noble metal

• Từ đồng nghĩa / Synonyms:
  Pt, atomic number 78