ATOMIC NUMBER 42

 I. (noun) 

Sense 1

Meaning:

A polyvalent metallic element that resembles chromium and tungsten in its properties; used to strengthen and harden steel

Synonyms:

atomic number 42; Mo; molybdenum

Classified under:

Nouns denoting substances

Hypernyms ("atomic number 42" is a kind of...):

metal; metallic element (any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.)

Holonyms ("atomic number 42" is a substance of...):

molybdenite (a mineral resembling graphite that is valued as the chief source of molybdenum and its compounds)

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