asphaltene

noun
as·​phal·​tene
plural -s

Definition of asphaltene

: any of the components of a bitumen (such as asphalt) that are soluble in carbon disulfide but not in paraffin naphtha and that are held to constitute the solid dispersed particles of the bitumen and to consist chiefly of high-molecular-weight hydrocarbons — compare carbene

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History and Etymology for asphaltene

French asphaltène, from asphalte asphalt + -ène -ene

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