ferrous oxide

American  

noun

Chemistry.

1. a black powder, FeO, insoluble in water, soluble in acid.

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ferrous oxide Scientific  

1. A black powder used to make steel, green heat-absorbing glass, and enamels. Chemical formula: FeO.

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Etymology

Origin of ferrous oxide

First recorded in 1870–75

Example Sentences

See Examples For:

ferrous oxide

Amused and enchanted, I named him "Ferrous" for the chemical name of rust, hydrated ferrous oxide.

From New York Times ● Feb. 13, 2018

The smoke thus produced reduces the red ferric oxide to blue-green ferrous oxide, or to metallic iron, which combines with the silica present to form a fusible ferrous silicate.

From Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" by Various

For example, ferrous oxide is FeO and ferrous chloride is FeCl2, and, again, ferric oxide is Fe2O3, whilst ferric chloride is Fe2Cl6.

From A Text-book of Assaying: For the Use of Those Connected with Mines. by Beringer, Cornelius

The ammonia precipitate contains the whole of the iron as ferric oxide; hence the necessity for calculating the ferrous oxide as ferric, and deducting it.

From A Text-book of Assaying: For the Use of Those Connected with Mines. by Beringer, Cornelius

The ferrous oxide is in part replaced by manganous oxide and lime, and in the closely allied and isomorphous species eosphorite manganese predominates over iron.

From Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 2 "Chicago, University of" to "Chiton" by Various