Made or consisting of iron; (also) resembling iron in hardness or other quality. Obsolete.

Of or relating to iron; consisting of or containing iron. Occasionally: spec. (Chemistry) = ferrous, adj. 2.

Of, relating to, or of the nature of iron rust; (frequently of mineral springs, soils, etc.) containing hydrated iron oxides.

Containing iron, esp. in the form of hydrated oxides; = ferruginous, adj. 2.

Impregnated with or containing iron or iron compounds.

Suffused or streaked with iron compounds or markings due to such compounds. Cf. shoot, v. 14b.

Producing or yielding iron; containing iron compounds or ore.