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

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

They explored several possible environmental consequences, including sunlight being blocked by dust and ash and rising carbon dioxide levels associated with volcanic eruptions.

From Science Daily ● Oct. 30, 2026

That knowledge is especially important today, as scientists work to understand how the planet's oceans and other natural systems will respond to the additional carbon dioxide now entering the Earth system.

From Science Daily ● Oct. 28, 2026

Over its first 20 years in the atmosphere, methane traps heat from solar radiation about 80 times as effectively as carbon dioxide.

From The Wall Street Journal ● Oct. 27, 2026

An overwhelming richness of vegetation may have caused the level of oxygen to rise above today’s concentration, with a corresponding depletion of carbon dioxide.

From "The Lives of a Cell" by Lewis Thomas

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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