- a white, crystalline, water-insoluble hydrocarbon, C10H8, usually obtained from coal tar: used in making dyes, as a moth repellant, etc.
Also naph·tha·line, naph·tha·lin [naf-thuh-lin, nap-] /ˈnæf θə lɪn, ˈnæp-/.
Origin of naphthalene
Also called tar camphor.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for naphthalene
As aniline is to benzene, so are the naphthylamines to naphthalene.
The important constituents of this portion are carbolic acid and naphthalene.
The story of naphthalene is summarized in the schemes on pp. 164, 165.
It is possible to start from benzene, toluene or naphthalene.Creative Chemistry
Edwin E. Slosson
An excess of naphthalene should also be avoided, since, on account of its strong odour, soaps containing much of it are unpopular.The Handbook of Soap Manufacture
W. H. Simmons
naphthaline naphthalin (ˈnæfθəlɪn, ˈnæp-)
- a white crystalline volatile solid with a characteristic penetrating odour: an aromatic hydrocarbon used in mothballs and in the manufacture of dyes, explosives, etc. Formula: C 10 H 8
C19: from naphtha + alcohol + -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
Word Origin and History for naphthalene
Online Etymology Dictionary, © 2010 Douglas Harper
- A toxic carcinogenic hydrocarbon derived from coal tar or petroleum and used as a solvent.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
- A white crystalline compound made from coal tar or petroleum and used to make dyes, mothballs, explosives, and solvents. Naphthalene consists of two benzene rings fused together. Chemical formula: C10H8.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.