ferrum fer·rum (fěr'əm)
Suscipe exemplum: substantia est lapis, ferrum; duritia lapidis et ferri natura substantiæ est.
Among the dearest kinds were the ferrum Indicum and Sericum.
Prterea magnes trahet ferrum, sive potius magnes & ferrum ad invicem accedunt, neque enim ulla ibi tractio est.
Germans (apud Tacitus) called their iron lances “framea,” which has great resemblance to ferrum.
Nothing can be more unlike than gold, χρυσος, and aurum; than silver and argentum; than ferrum and σιδηρος.
The former appears to be the ferrum candidum, a hundred talents of which were given as a present to Alexander in India828.
In ferrum pro libertate ruebant—They rushed upon the sword in defence of their liberty.
Thus firm is sounded in Ireland ferrum—two distinct syllables: 'that bird is looking for a wurrum.'
ferrum redactum, reduced iron, a powder containing at least 75% of metallic iron and a variable amount of oxide.
The forms in "f" appear to indicate a derivation from the Latin "ferrum," iron.