ferric oxide

noun Chemistry.

a dark-red, crystalline, water-insoluble solid, Fe2O3, occurring naturally, as hematite and rust, or synthesized: used chiefly as a pigment, as a mordant, as a coating for magnetic recording tape, and in the manufacture of polishing compounds.
Also called iron oxide.

Origin of ferric oxide

First recorded in 1880–85

Words nearby ferric oxide

ferriage, ferric, ferric ammonium oxalate, ferric chloride, ferric chloride test, ferric oxide, ferric sodium oxalate, ferricyanic acid, ferricyanide, ferrier, ferriferous

British Dictionary definitions for ferric oxide

ferric oxide

noun

a red crystalline insoluble oxide of iron that occurs as haematite and rust and is made by heating ferrous sulphate: used as a pigment and metal polish (jeweller's rouge), and as a sensitive coating on magnetic tape. Formula: Fe 2 O 3 Systematic name: iron (III) oxide

Scientific definitions for ferric oxide

ferric oxide

A reddish-brown to silver or black compound which occurs naturally as the mineral hematite and as rust. It is often used as a pigment and a metal polish. Chemical formula: Fe2O3.