dioxide

American  

[dahy-ok-sahyd, -sid] / daɪˈɒk saɪd, -sɪd /

noun

Chemistry.

• dioxides
  plural

1. an oxide containing two atoms of oxygen, each of which is bonded directly to an atom of a second element, as manganese dioxide, MnO 2 , or nitrogen dioxide, NO 2 .

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dioxide British  

/ daɪˈɒksaɪd /

noun

1. any oxide containing two oxygen atoms per molecule, both of which are bonded to an atom of another element

2. another name for a peroxide

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dioxide Scientific  

/ dī-ŏk′sīd /

1. A compound containing two oxygen atoms per molecule.

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Other Word Forms

Noun Inflected Forms

• dioxides
  plural

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Etymology

Origin of dioxide

First recorded in 1840–50; di- ¹ + oxide

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Example Sentences

See Examples For:

dioxide dioxides

Energy consumption could fall by 31.6%, while carbon dioxide emissions could decrease by 37.6%.

From Science Daily ● Nov. 5, 2026

He also keeps things like chlorine dioxide tablets, which are often used to make water from streams or rivers safe to drink.

From BBC ● Oct. 31, 2026

For decades, much of the research into ice age climate changes has concentrated on the Southern Ocean because of its important role in controlling atmospheric carbon dioxide.

From Science Daily ● Oct. 28, 2026

A molecule of methane traps far more heat than carbon dioxide, but persists in the atmosphere for only seven to 12 years, whereas carbon dioxide can last for hundreds of years.

From Barron's ● Oct. 27, 2026

But because of the vast quantities of carbon dioxide in the atmosphere, the sea could not be ordinary water; physical chemistry required carbonated water.

From "Cosmos" by Carl Sagan

The blue flames also emit harmful pollutants like nitrogen dioxides, as well as planet-warming gases.

From New York Times ● May 30, 2023

The burning of trash releases a host of pollutants, such as nitrogen oxides, sulfur dioxides and particulate matter, which are tiny fragments of debris that, once inhaled, cause an array of health problems.

From The Guardian ● Feb. 21, 2019

That said, I do love the dried fruit because it’s made without the sulfates and the sulfur dioxides and preservatives and is totally delicious.

From Slate ● Feb. 5, 2018

Most metals are deposited as such upon the cathode; a few, notably lead and manganese, separate in the form of dioxides upon the anode.

From An Introductory Course of Quantitative Chemical Analysis With Explanatory Notes by Henry P. Talbot

These oxides are distinguished from one another by such names as "higher" and "lower oxides," "peroxides," "protoxides," "dioxides," &c.

From A Text-book of Assaying: For the Use of Those Connected with Mines. by Cornelius Beringer

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