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A dark red compound, Fe2O3, occurring naturally as hematite ore and rust and used in pigments and metal polishes and on magnetic tapes.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Elements & Compounds) 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. Systematic name: iron (III) oxide
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
a red crystalline compound, Fe2O3, used as a pigment, mordant, and coating for magnetic tape.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
A reddish-brown to silver or black compound, Fe2O3, which occurs naturally as the mineral hematite, or as rust. It is often used as a pigment and a metal polish.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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|Noun||1.||ferric oxide - a red oxide of iron|
rusting, rust - the formation of reddish-brown ferric oxides on iron by low-temperature oxidation in the presence of water
rust - a red or brown oxide coating on iron or steel caused by the action of oxygen and moisture
oxide - any compound of oxygen with another element or a radical
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