ferric oxide

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:
1880–85
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Ferric oxide is always a great word to know.
So is oxide. Does it mean:
a solution containing the maximum amount of solute capable of being dissolved under given conditions
a compound in which oxygen is bonded to one or more electropositive atoms
Collins
World English Dictionary
ferric oxide
 
n
Systematic name: iron (III) oxide 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: Fe2O3

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Science Dictionary
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.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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