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

Appended are two analyses of pyrolusite containing sesquioxide of iron.

From British Manufacturing Industries Pottery, Glass and Silicates, Furniture and Woodwork. by Arnoux, L.

Various other oxides of chromium, intermediate in composition between the sesquioxide and trioxide, have been described, namely chromium dioxide, Cr2O3�CrO3, and the oxide CrO3�2Cr2O3.

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

If the temperature is raised to 1,200 degrees, and the time of exposure to six or seven hours, the skin of sesquioxide will resist every mechanical action, and the influence of any kind of weather.

From Scientific American, Vol. XXXIX.?No. 24. [New Series.], December 14, 1878 A Weekly Journal Of Practical Information, Art, Science, Mechanics, Chemistry, And Manufactures by Various

The rare metal iridium affords a blue which is a mixture of the oxide and the sesquioxide.

From Field's Chromatography or Treatise on Colours and Pigments as Used by Artists by Salter, Thomas

The colouring matter of which is sesquioxide of iron, is used as a crayon.

From Field's Chromatography or Treatise on Colours and Pigments as Used by Artists by Salter, Thomas