| 单词 | naphthene |
| 释义 | naphthene[ naf-theen, nap- ] / ˈnæf θin, ˈnæp- / noun Chemistry.any of a group of hydrocarbon ring compounds of the general formula, CnH2n, derivatives of cyclopentane and cyclohexane, found in certain petroleums. Origin of naphtheneFirst recorded in 1840–50; naphth- + -ene OTHER WORDS FROM naphthenenaph·the·nic [naf-thee-nik, -then-ik, nap-], /næfˈθi nɪk, -ˈθɛn ɪk, næp-/, adjectiveWords nearby naphthenenaphth-, naphtha, naphthacene, naphthalene, naphthalize, naphthene, naphthol, naphthol yellow S, naphthyl, naphthyl group, napier Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for naphthenenaphthene / (ˈnæfθiːn, ˈnæp-) / nounany of a class of cycloalkanes, mainly derivatives of cyclopentane, found in petroleum Word Origin for naphtheneC20: 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 Scientific definitions for naphthenenaphthene [ năf′thēn′, năp′- ] See cycloalkane. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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