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.

From Science Daily

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.

From Science Daily

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.

From Salon

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.

From Salon

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.

From Nature