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ferrous oxide

noun, Chemistry.
a black powder, FeO, insoluble in water, soluble in acid.
Also called iron monoxide.
Origin of ferrous oxide
1870-75 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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ferrous-oxide in Science
ferrous oxide  
A black powder used to make steel, green heat-absorbing glass, and enamels. Chemical formula: FeO.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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