trioxide

[trahy-ok-sahyd, -sid]

noun

Chemistry.

1. an oxide containing three oxygen atoms, as As 2 O 3 .

trioxide

/ traɪˈɒksaɪd /

noun

1. any oxide that contains three oxygen atoms per molecule

   sulphur trioxide, SO3

Word History and Origins

Origin of trioxide¹

First recorded in 1865–70; tri- + oxide

Example Sentences

Researchers at Tampere University have discovered that sulfur trioxide can form products other than sulfuric acid in the atmosphere by interacting with organic and inorganic acids.

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To stabilize the divalent chromium on Earth, researchers maintained high temperatures, almost 2,500 degrees Fahrenheit, under high vacuum during the synthesis that started from chromium metal, chromium trioxide and other chemicals.

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These include antimony trioxide, which is often used in plastic production and flame retardants for consumer products, and six haloacetic acids that may be produced during chlorine-based disinfection processes for drinking water.

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The safety data sheet for Instantaneous Blast says that it contains diiron trioxide, magnesium oxide, zinc metal, potassium perchlorate, aluminum powder zirconium powder, and lead dithiocyanate, among other metallic compounds.

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Because the crystal structure of molybdenum trioxide is highly anisotropic, all three crystal axes, which define the edges of the crystal’s unit cell, have different lengths.

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