[naf-theen, nap-]

noun Chemistry.

any of a group of hydrocarbon ring compounds of the general formula, CnH2n, derivatives of cyclopentane and cyclohexane, found in certain petroleums.

Nearby words

  1. naphthalene,
  2. naphthalenic,
  3. naphthalic,
  4. naphthalin,
  5. naphthalize,
  6. naphthenic,
  7. naphthol,
  8. naphthol yellow s,
  9. naphthyl,
  10. naphthyl group

Origin of naphthene

First recorded in 1840–50; naphth- + -ene

Related formsnaph·the·nic [naf-thee-nik, -then-ik, nap-] /næfˈθi nɪk, -ˈθɛn ɪk, næp-/, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for naphthene



any of a class of cycloalkanes, mainly derivatives of cyclopentane, found in petroleum

Word Origin for naphthene

C20: from naphtha + -ene

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Science definitions for naphthene


[năfthēn′, năp-]

See cycloalkane.
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