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trioxide

American  
[trahy-ok-sahyd, -sid] / traɪˈɒk saɪd, -sɪd /

noun

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


trioxide British  
/ traɪˈɒksaɪd /

noun

  1. any oxide that contains three oxygen atoms per molecule

    sulphur trioxide, SO3

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of trioxide

First recorded in 1865–70; tri- + oxide

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

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 May 23, 2024

Both antimony trioxide and the suite of haloacetic acids have previously been recognized by state and federal agencies as hazardous substances.

From Salon Jan. 12, 2022

The heating process causes the loss of more sulfur trioxide than water, until reaching a concentration of 98.33% acid.

From Textbooks Feb. 14, 2019

In the form of arsenic trioxide, it can be used to treat acute promyelocytic leukemia, the book says.

From Washington Post Jun. 10, 2013

Antimony trifluoride, SbF3, is obtained by dissolving the trioxide in aqueous hydrofluoric acid or by distilling antimony with mercuric fluoride.

From Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 2 "Anjar" to "Apollo" by Various

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