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

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

From New York Times • Feb. 13, 2018

The differences are surprisingly small and are principally an increase in the water and a diminution in the amount of alkalis and lime together with the oxidation of the ferrous oxide.

From Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 3 "Gordon, Lord George" to "Grasses" 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

Ferrous Oxide.—When a qualitative test shows both ferric and ferrous oxide to be present, the proportion of the ferrous oxide must be separately determined.

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

Calculate the percentage as ferrous oxide, unless there are reasons to the contrary, also calculate its weight as ferric oxide.

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