ADJ.
used
VERB + FERROUS
takes
FERROUS + NOUN
metal, metals, scrap, sulphate
adj
Of or containing iron.
ferrous metals
ferrous scrap
Of compounds of iron in which it has a valence or oxidation number of +2.
Of an element: iron, or in certain ways similar to iron. (Said mainly of iron group elements, in any sense of that term.)
adjective — of or relating to or containing iron
The blacksmith used a ferrous metal to forge a sturdy horseshoe for the horse.
Steel is a ferrous metal.
Tom takes ferrous sulphate supplements.