car·​bo·​na·​ceous | \ ˌkär-bə-ˈnā-shəs How to pronounce carbonaceous (audio) \

Definition of carbonaceous

1 : relating to, containing, or composed of carbon
2 : rich in carbon

Examples of carbonaceous in a Sentence

Recent Examples on the Web The meteorite—a rare type known as a carbonaceous chondrite—may contain complex organic molecules that gave life on Earth a head start. Joel Goldberg, Science | AAAS, "Watch: Space rocks impacted this Costa Rican village in more ways than one," 19 Aug. 2020 Models predict carbonaceous asteroids crashing down on early Earth would have produced an ancient atmosphere rich in water vapor and carbon dioxide. Joshua Sokol, Science | AAAS, "An unusual meteorite, more valuable than gold, may hold the building blocks of life," 13 Aug. 2020 Both appear to be similar in composition to blackish carbonaceous chondrite asteroids. Ashley Strickland, CNN, "Mars' moons may hint that the planet once had rings," 3 June 2020 One common theory holds that rocky planets like Earth and Mars got much of their water from a particular type of meteorite known as carbonaceous chondrites. Popular Science, "Mars might be made of mashed-up baby planets," 2 Apr. 2020 Related Stories For nearly 50 years, researchers have been searching for and finding organic compounds like amino acids in meteorite samples—mostly carbonaceous chondrite meteorites. Jennifer Leman, Popular Mechanics, "Scientists Found Protein in a Meteorite, Which Means Space Is Totally Yoked," 2 Mar. 2020 Sure enough, the rock had the oxygen fingerprint of a meteorite, and a rare and old kind, too: a CV3 carbonaceous chondrite. Quanta Magazine, "In a Grain, a Glimpse of the Cosmos," 13 June 2014 The mammals also miniaturized over generations, as leaves became less nutritious in the carbonaceous air. Natalie Wolchover, WIRED, "As the World Warms, Clouds Could Disappear—Catastrophically," 3 Mar. 2019 The mammals also miniaturized over generations, as leaves became less nutritious in the carbonaceous air. Wired, "As the World Warms, Clouds Could Disappear—Catastrophically," 3 Mar. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'carbonaceous.' 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 carbonaceous

1727, in the meaning defined at sense 1

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The first known use of carbonaceous was in 1727

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Statistics for carbonaceous

Last Updated

11 Sep 2020

Cite this Entry

“Carbonaceous.” Dictionary, Merriam-Webster, Accessed 24 Sep. 2020.

More from Merriam-Webster on carbonaceous

Britannica English: Translation of carbonaceous for Arabic Speakers

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