carbene

noun
car·bene | \ˈkärˌbēn\
plural -s

Definition of carbene 

1 : one of the components of bitumen soluble in carbon disulfide but insoluble in carbon tetrachloride usually used in plural — compare asphaltene

2 : any of a class of usually highly reactive chemical compounds containing an uncharged divalent carbon atom that are formed especially as intermediates in chemical reactions

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History and Etymology for carbene

carb- + -ene

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