Adjective "iron blue" definition and examples



1. Chemistry. a ductile, malleable, silver-white metallic element, scarcely known in a pure condition, but much used in its crude or impure carbon-containing forms for making tools, implements, machinery, etc. Symbol:Fe; atomic weight:5

5.847; atomic number:26; specific gravity:

7.86 at 20°C.

Compare cast iron, pig iron, steel, wrought iron.

2. something hard, strong, rigid, unyielding, or the like: hearts of iron.

3. an instrument, utensil, weapon, etc., made of iron.

4. an appl