carbanion

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carb·an·i·on

(karb-an'ī-on),
An organic anion in which the negative charge is on a carbon atom; the specific names are formed by adding -ide, -diide, etc., to the name of the parent compound; for example, methanide, (CH3)-.

carbanion

An anion with a negatively charged carbon and a pair of unshared electrons.

carbanion

(kăr-băn′ī-ŏn)
A carbon ion with a negative electrical charge.