Relating to iron, especially denoting a salt containing iron in its lowest valence state, Fe2+. [L. ferreus, made of iron]
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fer·rous 'fer-əs adj
1) of, relating to, or containing iron
2) being or containing iron with a valence of two
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fer·rous (ferґəs) containing iron in its plus-two oxidation state, Fe(II) (sometimes designated Fe2+).Medical dictionary. 2011.