iron(II) oxide

English

Noun

iron(II) oxide (uncountable)

1. (chemistry) The chemical compound FeO: the iron oxide in which iron has a valence of +2.

   Synonym: ferrous oxide (dated)

   Hypernym: iron oxide

   Coordinate term: iron(III) oxide

Usage notes

• This is the IUPAC preferred nomenclature. The old term was ferrous oxide.