carbanion

noun
carb·an·ion | \ kär-ˈba-ˌnī-ən , -ˌnī-ˌän \

Definition of carbanion 

: an organic ion carrying a negative charge on a carbon atom — compare carbonium

First Known Use of carbanion

1933, in the meaning defined above

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The first known use of carbanion was in 1933

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carbanion

noun
carb·an·ion | \ kär-ˈban-ˌī-ən, -ˌī-ˌän \

Medical Definition of carbanion 

: an organic ion carrying a negative charge on a carbon atom

More from Merriam-Webster on carbanion

Britannica.com: Encyclopedia article about carbanion

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