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ferrous oxide

American  

noun

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


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


Etymology

Origin of ferrous oxide

First recorded in 1870–75


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

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

From New York Times ● Feb. 13, 2018

The analysis showed the presence of 6.89 per cent. of ferrous oxide, and some oxide of copper.

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

When oxygen, in a free or gaseous state, comes into contact with iron, it produces ferrous oxide, which is recognized as rust.

From Electricity for Boys by James Slough Zerbe

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

Manganese dioxide not only acts as a source of oxygen, but develops a pink tint in the glass, which is complementary to and neutralizes the green colour due to ferrous oxide.

From Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 1 "Gichtel, Johann" to "Glory" by Various

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