car·​bo·​ni·​um kär-ˈbō-nē-əm How to pronounce carbonium (audio)
: an organic ion carrying a positive charge on a carbon atom compare carbanion

Example Sentences

Recent Examples on the Web The bezel is blue carbonium, a lightweight, durable material used in the aerospace industry that, because its manufacturing process involves using waste materials, has a 40% lower environmental impact than other carbon. Carol Besler, Forbes, 9 Apr. 2021

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

Word History


carb- + -onium

First Known Use

1902, in the meaning defined above

Time Traveler
The first known use of carbonium was in 1902

Dictionary Entries Near carbonium

Cite this Entry

“Carbonium.” Dictionary, Merriam-Webster, Accessed 27 Jan. 2023.

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