sesquioxide

[ ses-kwee-ok-sahyd, -sid ]

noun

, Chemistry.

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

sesquioxide

/ ˌsɛskwɪˈɒksaɪd /

noun

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

   chromium sesquioxide, Cr2O3

Word History and Origins

Origin of sesquioxide¹

First recorded in 1825–35; sesqui- + oxide

Example Sentences

Hydrated chromium sesquioxide is another mineral emerald green.

From Project Gutenberg

If it contains manganese this metal will be present as sesquioxide (Mn2O3).

From Project Gutenberg

A method has been proposed based on the reduction of titanic oxide by zinc in hydrochloric acid solutions to the sesquioxide.

From Project Gutenberg

When a ferrocyanide is added to a solution of a sesquioxide of iron, Prussian blue or ferrocyanide of iron is produced.

From Project Gutenberg

Gaseous ammonia passed over the oxide reduces it to the sesquioxide with formation of nitrogen and water.

From Project Gutenberg