Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. Any of several cycloalkane hydrocarbons having the general formula CnH2n and found in various petroleums.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Any cycloalkane (or alkyl derivative).

from the GNU version of the Collaborative International Dictionary of English

  • n. A peculiar hydrocarbon fraction occuring as an ingredient of some crude petroleums, mostly mixtures of derivatives of the five- and six-membered saturated cyclic alkanes, cyclopentane and cyclohexane, having the general formula CnH2n.

from The Century Dictionary and Cyclopedia

  • n. In organic chemistry, a class-name of a series of hydrocarbons derived from hexahydrobenzene (cyclohexane), C6H12. Many of them may be made synthetically, and a considerable number are found in petroleum, especially in that from the Baku district.

Etymologies

naphth(a) + -ene.
(American Heritage® Dictionary of the English Language, Fourth Edition)
naphtha +‎ -ene (Wiktionary)

Examples

  • Depending on the properties of the naphtha feedstock (as measured by the paraffin, olefin, naphthene, and aromatic content) and catalysts used, reformates can be produced with very high concentrations of toluene, benzene, xylene, and other aromatics useful in gasoline blending and petrochemical processing.

    Cracking

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