Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun atomic_number_78

1 sense of atomic number 78

Sense 1
platinum, Pt, atomic number 78 -- (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)
       => noble metal -- (any metal that is resistant to corrosion or oxidation)