ATOMIC NUMBER 78

 Dictionary entry overview: What does atomic number 78 mean? 

• ATOMIC NUMBER 78 (noun)
  The noun ATOMIC NUMBER 78 has 1 sense:

1. 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

  Familiarity information: ATOMIC NUMBER 78 used as a noun is very rare.

 Dictionary entry details 

• ATOMIC NUMBER 78 (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

Classified under:

Nouns denoting substances

Synonyms:

atomic number 78; platinum; Pt

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

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

 Context examples 

An element with atomic symbol Pt, atomic number 78, and atomic weight 195.09.

(Platinum, NCI Thesaurus)