atomic number 42
Also found in: Thesaurus.
Related to atomic number 42: Forty two
Switch to new thesaurus
|Noun||1.||atomic number 42 - a polyvalent metallic element that resembles chromium and tungsten in its properties; used to strengthen and harden steel|
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.
molybdenite - a mineral resembling graphite that is valued as the chief source of molybdenum and its compounds