ATOMIC NUMBER 78

 I. (noun) 

Sense 1

Meaning:

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:

atomic number 78; platinum; Pt

Classified under:

Nouns denoting substances

Hypernyms ("atomic number 78" is a kind of...):

noble metal (any metal that is resistant to corrosion or oxidation)

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