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

Example Sentences

See Examples For:

sesquioxide

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

When heated in a current of sulphuretted hydrogen, or carbon bisulphide, it yields a mixture of chromium sesquioxide and sulphide.

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

The gold is about 20 or 21 carats fine, and often shows traces of iron sesquioxide.

From The Romance of Industry and Invention by Cochrane, Robert

The most stable lakes are those in which the colouring matter is combined with two metallic oxides, a sesquioxide and a monoxide—e.g. alumina and lime.

From Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 8 "Dubner" to "Dyeing" by Various

Send to druggist's for two ounces hydrated sesquioxide of iron, the best antidote, and give tablespoonful every quarter hour in half a glass of water.

From The Home Medical Library, Volume I (of VI) by Winslow, Kenelm