Definition of "ferrum" [ferrum]

• The Latin name for iron, from which the chemical symbol for the metal, Fe, is derived: used by German pharmaceutical chemists, in price-lists, etc., and in the names for iron compounds, as ferrum citricum, citrate of iron. (noun)

The Century Dictionary (Public Domain)

• "Fe for short, after the Latin word "ferrum," meaning iron -- it is one of those substances which cannot be separated into anything else but itself."
• ""We also found ferrum sillicate that can not be produced anywhere, except in space"."
• "Experiments have shown that the vitamin content of vegetables grown from space seeds is 281.5 per cent of that of ordinary vegetables; and microelements of ferrum, zinc and carotene are also higher than normal."