iron (the metal) / (chemistry) ferrous

A surname. / El Hierro, the smallest island in the Canary Islands.

(historical, geography) A meridian formerly used as a prime meridian; now defined as 18.160792° west.

Of or containing iron. / (chemistry) Of compounds of iron in which it has a valence or oxidation number of 2.

(physics) Exhibiting ferromagnetism.

Alternative form of nonferrous

Any alloy of iron and another metal, especially one of silicon, manganese, chromium, vanadium, tungsten, titanium and molybdenum; used in the production of specialist steels as they have a lower melting point than the pure metal.

(chemistry) a ferrocene containing a bridge of carbon atoms between the two cyclopentadienyl rings; used as ligands in asymmetric catalysis

(chemistry) a ferrocenophane containing a carbonyl functional group on the bridge; used in the synthesis of asymmetric catalysts

Any of a class of metallocenes containing an iron atom between two cyclopentadienyl rings; especially the simplest of the class bis-cyclopentadienyl iron.