oxide

noun

ox·​ide ˈäk-ˌsīd How to pronounce oxide (audio)
: a binary compound of oxygen with a more electropositive element or group
oxidic adjective

Examples of oxide in a Sentence

Recent Examples on the Web
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The process also completely removed sulfur compounds, preventing emissions of sulfur oxides that contribute to acid rain and air pollution. New Atlas, 1 July 2026 The researchers addressed that limitation by increasing the surface area of the carbon electrode and loading it with vanadium oxide, a material that can store a large amount of energy. Atharva Gosavi, Interesting Engineering, 30 June 2026 Nail technicians in salons across the continent need to dispose of polishes containing trimethylbenzoyl diphenylphosphine oxide, or TPO, and switch to alternatives. Lauren Jarvis-Gibson, Miami Herald, 26 June 2026 To remove hard water stains in toilet bowls and sinks, look for products that contain acids and oxides that will remove the mineral buildup. Mary Marlowe Leverette, Southern Living, 23 June 2026 See All Example Sentences for oxide

Word History

Etymology

French oxide, oxyde, from ox- (from oxygène oxygen) + -ide (from acide acid)

First Known Use

1788, in the meaning defined above

Time Traveler
The first known use of oxide was in 1788

Cite this Entry

“Oxide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/oxide. Accessed 5 Jul. 2026.

Kids Definition

oxide

noun
ox·​ide ˈäk-ˌsīd How to pronounce oxide (audio)
: a compound of oxygen with another element or a chemical group

Medical Definition

oxide

noun
ox·​ide ˈäk-ˌsīd How to pronounce oxide (audio)
: a binary compound of oxygen with a more electropositive element or chemical group

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