sesquioxide

American  

[ses-kwee-ok-sahyd, -sid] / ˌsɛs kwiˈɒk saɪd, -sɪd /

noun

Chemistry.

1. an oxide containing three atoms of oxygen and two of another element, as aluminum oxide, Al 2 O 3 .

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sesquioxide British  

/ ˌsɛskwɪˈɒksaɪd /

noun

1. any of certain oxides whose molecules contain three atoms of oxygen for every two atoms of the element

   chromium sesquioxide, Cr2O3

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Etymology

Origin of sesquioxide

First recorded in 1825–35; sesqui- + oxide

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Example Sentences

See Examples For:

sesquioxide

The precipitate so obtained is a brown amorphous solid which readily oxidizes on exposure, and is decomposed by heat with liberation of hydrogen and formation of the sesquioxide.

From Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 3 "Chitral" to "Cincinnati" by Various

Three characteristic oxides of cobalt are known, the monoxide, CoO, the sesquioxide, Co2O3, and tricobalt tetroxide, Co3O4; besides these there are probably oxides of composition CoO2, Co8O9, Co6O7 and Co4O5.

From Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 5 "Clervaux" to "Cockade" by Various

The red coloration disappears, a part of the iron perchloride is washed out, and in the parts which have not been acted on by light the perchloride is transformed into sesquioxide.

From Photographic Reproduction Processes by Peter C. Duchochois

"It is a native sesquioxide of a reddish color, with a blood-like streak," added the surgeon, laughing.

From Asiatic Breezes Students on The Wing by Oliver Optic

They are readily decomposed by heat, leaving a residue of the normal chromate and chromium sesquioxide, and liberating oxygen; ammonium bichromate, however, is completely decomposed 913 into chromium sesquioxide, water and nitrogen.

From Encyclopaedia Britannica, 11th Edition, Volume 3, Slice 7 "Bible" to "Bisectrix" by Various

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