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Meaning of naphthene

naph•thene

Pronunciation: (naf'thēn, nap'-), [key]
— n. Chem.
  1. any of a group of hydrocarbon ring compounds of the general formula, CH, derivatives of cyclopentane and cyclohexane, found in certain petroleums.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.