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naphthene

[naf-theen, nap-]
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noun Chemistry.
  1. any of a group of hydrocarbon ring compounds of the general formula, CnH2n, derivatives of cyclopentane and cyclohexane, found in certain petroleums.
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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
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for naphthenes

naphthene

noun
  1. any of a class of cycloalkanes, mainly derivatives of cyclopentane, found in petroleum
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Word Origin

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

naphthenes in Science

naphthene

[năfthēn′, năp-]
  1. See cycloalkane.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.