carbon monoxide

noun

Definition of carbon monoxide

: a colorless odorless very toxic gas CO that is formed as a product of the incomplete combustion of carbon or a carbon compound

Examples of carbon monoxide in a Sentence

Recent Examples on the Web

The machines — which are used by many Americans during power outages after severe storms — emit more carbon monoxide than cars and cause about 70 accidental deaths a year. Juliet Eilperin, chicagotribune.com, "Emails reveal close rapport between top EPA officials and those they regulate," 1 July 2018 The machines — which are used by many Americans during power outages after severe storms — emit more carbon monoxide than cars and cause about 70 accidental deaths a year. Juliet Eilperin, Washington Post, "Emails reveal close rapport between top EPA officials, those they regulate," 1 July 2018 Similar transitions occur for other compounds, like carbon monoxide and ammonia. Joshua Sokol, WIRED, "These Spinning Disks of Gas and Dust Reveal How Planets Get Made," 28 May 2018 For instance, using this method astronomers have learned that HR 8799e is a hot, inhospitable world made of carbon monoxide and methane. Avery Thompson, Popular Mechanics, "New Method For Studying Exoplanets Could Tell Us Far More About Alien Worlds," 29 Mar. 2019 Methylene chloride turns into carbon monoxide and can be inhaled even when those using it wear a mask. Natalie Dreier, ajc, "Lowe’s pulls paint strippers with deadly ingredients," 30 May 2018 Boyle's dog was also found deceased, having succumbed to exposure to carbon monoxide. Madeleine Marr, miamiherald, "He carefully planned his suicide. But the plan went horribly awry, cops say.," 30 May 2018 The school remained closed March 23 while the fire department and other air quality professionals monitored the buildings for carbon monoxide. Jordyn Noennig, Milwaukee Journal Sentinel, "Carbon monoxide has not been detected within Oconomowoc High School and Arts Center," 11 Apr. 2018 Mars' atmosphere is 95.97 percent carbon dioxide, 1.89 percent nitrogen, 1.93 percent argon, 0.0557 percent carbon monoxide and just 0.146 percent oxygen. Chris Ciaccia, Fox News, "How Buzz Aldrin wants to make Mars habitable," 28 June 2018

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

See More

First Known Use of carbon monoxide

1868, in the meaning defined above

Keep scrolling for more

Learn More about carbon monoxide

Statistics for carbon monoxide

Last Updated

9 May 2019

Look-up Popularity

Time Traveler for carbon monoxide

The first known use of carbon monoxide was in 1868

See more words from the same year

Keep scrolling for more

More Definitions for carbon monoxide

carbon monoxide

noun

English Language Learners Definition of carbon monoxide

: a poisonous gas that is formed when carbon is not completely burned and especially when gasoline is burned in car engines

carbon monoxide

noun
carbon mon·​ox·​ide | \ -mə-ˈnäk-ˌsīd\

Kids Definition of carbon monoxide

: a colorless odorless very poisonous gas formed by incomplete burning of carbon

carbon monoxide

noun

Medical Definition of carbon monoxide

: a colorless odorless very toxic gas CO that burns to carbon dioxide with a blue flame and is formed as a product of the incomplete combustion of carbon

Keep scrolling for more

More from Merriam-Webster on carbon monoxide

Rhyming Dictionary: Words that rhyme with carbon monoxide

Spanish Central: Translation of carbon monoxide

Britannica.com: Encyclopedia article about carbon monoxide

Comments on carbon monoxide

What made you want to look up carbon monoxide? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

standardized text or formulaic language

Get Word of the Day daily email!

Test Your Vocabulary

Finance Words Quiz

  • a-piggy-bank
  • The etymology of mortgage is related most closely to which two words?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!