car·​bo·​na·​ceous ˌkär-bə-ˈnā-shəs How to pronounce carbonaceous (audio)
: relating to, containing, or composed of carbon
: rich in carbon

Example Sentences

Recent Examples on the Web Another useful marker are tiny spheroidal carbonaceous particles (SCPs), a type of tough fly ash only produced by the high-temperature burning of coal or heavy oil. Damian Carrington, WIRED, 14 Jan. 2023 Last year, physicists at the University of Rochester demonstrated room temperature superconductivity in a sample of carbonaceous hydrogen sulfide at about 15 degrees Centigrade. The Physics Arxiv Blog, Discover Magazine, 23 Apr. 2021 Both were carbonaceous chondrites, a rare class of meteorites resembling Ryugu that scientists think accreted from smaller icy bodies after the solar system first formed. John Rennie, Quanta Magazine, 4 Jan. 2023 The meteorite itself was valuable, belonging to a class called carbonaceous chondrites, prized for being ancient and relatively unchanged throughout the solar system’s history. Korey Haynes, Discover Magazine, 18 Apr. 2019 Earth wasn’t the only planet that received water from carbonaceous chondrites in its early era, suggests another study, also published Wednesday in Science Advances. Margaret Osborne, Smithsonian Magazine, 18 Nov. 2022 The one pound of carbonaceous chondrite plowed into the English town of Winchcombe in February 2021. Tim Newcomb, Popular Mechanics, 17 Nov. 2022 The retraction comes even as excitement builds for the class of superconducting materials called hydrides, which includes the carbonaceous sulfur hydride (CSH) developed by Dias’s team. Byeric Hand,, 26 Sep. 2022 The age of the grains in their dust can be identified and dated by their isotopic signatures, and the team compared the Ryugu dust samples to grains found in carbonaceous chondrite meteorites that have been found on Earth. Jennifer Ouellette, Ars Technica, 26 Sep. 2022 See More

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.

Word History

First Known Use

1727, in the meaning defined at sense 1

Time Traveler
The first known use of carbonaceous was in 1727

Dictionary Entries Near carbonaceous

Cite this Entry

“Carbonaceous.” Dictionary, Merriam-Webster, Accessed 30 Jan. 2023.

Kids Definition


car·​bo·​na·​ceous ˌkär-bə-ˈnā-shəs How to pronounce carbonaceous (audio)
: relating to, containing, or made up of carbon

More from Merriam-Webster on carbonaceous

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