mon·​ox·​ide | \mə-ˈnäk-ˌsīd \

Definition of monoxide 

: an oxide containing one atom of oxygen in a molecule

Examples of monoxide in a Sentence

Recent Examples on the Web

Authorities in the state later reported two more deaths from carbon-monoxide poisoning caused by a generator. Valerie Bauerlein, WSJ, "Florence Flooding Threatens to Last for Days," 16 Sep. 2018 Combined detector: Buy combined smoke and carbon-monoxide detectorsand you're covered for both types of danger. The Editors Of House Beautiful, House Beautiful, "How to Install a Smoke Detector," 12 Feb. 2015 Homes with real fires or natural gas supply: as above, with additional carbon-monoxide alarm. The Editors Of House Beautiful, House Beautiful, "How to Install a Smoke Detector," 12 Feb. 2015 The family also has contemplated a campaign to encourage the use of carbon-monoxide detectors. USA TODAY, "Relatives hold funeral for Iowa family found dead in Mexico as questions remain," 31 Mar. 2018 The explosion of the soda cans was most likely caused by heat; a carbon-monoxide buildup would not cause such an explosion. New York Times, "Deadly Convenience: Keyless Cars and Their Carbon Monoxide Toll," 13 May 2018 The department claimed Williams did not have the proper zoning or certificate of occupancy to run a triplex, and his second-floor apartment had a malfunctioning stove and lacked a carbon-monoxide detector. Claudia Vargas,, "A leaky ceiling, raccoons and cat poop: Ex-residents say Sheriff Williams was a 'slumlord'," 7 May 2018 The daily hostility between the inmates and the guards felt as toxic as a continuous monoxide leak, bound to lead to someone's death if even one door closed for longer than usual. Idra Novey,, "Rachel Kushner's new novel, 'The Mars Room,' is devastating," 26 Apr. 2018 Only an ignition problem and an ominous, persistent green leak from underneath the hood, spewing more smoky monoxide exhaust than usual from its tailpipe just this minute, like the Batmobile. Miles Marshall Lewis, The Root, "(What Did I Do to Get So) Black and Blue," 18 Mar. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'monoxide.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of monoxide

1868, in the meaning defined above

History and Etymology for monoxide

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Statistics for monoxide

Last Updated

15 Nov 2018

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Time Traveler for monoxide

The first known use of monoxide was in 1868

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More Definitions for monoxide


mon·​ox·​ide | \mə-ˈnäk-ˌsīd \

Medical Definition of monoxide 

: an oxide containing one atom of oxygen per molecule — see carbon monoxide

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More from Merriam-Webster on monoxide

Rhyming Dictionary: Words that rhyme with monoxide

Spanish Central: Translation of monoxide

Nglish: Translation of monoxide for Spanish Speakers

Britannica English: Translation of monoxide for Arabic Speakers

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