ferrous

 : 
Adjective
 : 
fer=rous

WORDNET DICTIONARY

Adjective ferrous has 1 sense

CIDE DICTIONARY

ferrousa. [Cf. F. ferreux. See Ferreous.].
     Pertaining to, or derived from, iron; -- especially used of compounds of iron in which the iron has its lower valence of two; as, ferrous sulphate.  [1913 Webster]

OXFORD DICTIONARY

ferrous, adj.
1 containing iron (ferrous and non-ferrous metals).
2 Chem. containing iron in a divalent form (cf. FERRIC).

Etymology
L ferrum iron

For further exploring for "ferrous" in Webster Dictionary Online


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