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carbonium ion

American  
[kahr-boh-nee-uhm] / kɑrˈboʊ ni əm /

noun

  1. an organic ion containing a positively charged carbon atom (carbanion ).

carbonium ion British  
/ kɑːˈbəʊnɪəm /

noun

  1. chem a positively charged organic ion in which most of the positive charge is localized on a carbon atom Compare carbanion

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of carbonium ion

carbon + -ium

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.