ferric oxide

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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.

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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

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use ferric oxide in a sentence

Amid the Iron Islands—perhaps non-ferric metals are scarce in the Seven Kingdoms?
Game of Thrones’ Ep. 6, ‘The Laws of Gods and Men’: The Riveting Trial of Tyrion Lannister|Andrew Romano|May 12, 2014|DAILY BEAST
Nitric oxide helps to promote the flow of oxygen, so it may improve your endurance and fight fatigue during your sweat session.
6 Healthy Foods to Fight the Flu, Beat Stress and More|DailyBurn|February 5, 2014|DAILY BEAST
Campbell is quoted saying “Nitrous oxide can explode on its own.”
Branson’s Galactic Obstacles: Tom Bower Puts a Damper on Virgin’s Space Flight Dreams|Clive Irving|January 30, 2014|DAILY BEAST
Nitrous oxide, otherwise known as laughing gas, gives one an exhilarating feeling while operating as an anesthetic.
Gina Gershon’s Trip to Heaven in the Dentist’s Chair|Gina Gershon|October 23, 2012|DAILY BEAST

Tragic indeed are those whip-it rumors about Demi Moore, for the allure of nitrous oxide is hardly a mystery to me.
Demi Moore’s Poignant Fall|Tracy Quan|February 15, 2012|DAILY BEAST
Reddish and yellowish sandy clay, coloured by oxide of iron, and used as pigments by the natives.
Narrative of a Survey of the Intertropical and Western Coasts of Australia] [Volume 2 of 2]|Phillip Parker King
Blew in two faces & got good looking ore seamed with a black incrustation, oxide of something, but what could not determine.
Cabin Fever|B. M. Bower
It gave a bluish-black color with impure ferrous sulphate and a dark color with ferric chloride.
Some Constituents of the Poison Ivy Plant: (Rhus Toxicodendron)|William Anderson Syme
An alcoholic solution of this substance gave a dark color with ferric chloride and a light colored precipitate with lead acetate.
Some Constituents of the Poison Ivy Plant: (Rhus Toxicodendron)|William Anderson Syme
A small portion of the tar residue in alcoholic solution gave a color reaction with ferric chloride.
Some Constituents of the Poison Ivy Plant: (Rhus Toxicodendron)|William Anderson Syme

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 3Systematic name: iron (III) oxide

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

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.