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from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A colorless crystalline organic acid, C6H4(COOH)2, prepared from naphthalene and used in the synthesis of dyes, perfumes, and other organic compounds.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Any of three isomeric aromatic organic dicarboxylic acids, C6H4(COOH)2; especially the ortho- isomer manufactured from naphthalene, used in the synthesis of dyes, perfumes and other compounds.

from the GNU version of the Collaborative International Dictionary of English

  • adj. a white crystalline substance, C6H4.(CO2H)2, analogous to benzoic acid, and employed in the brilliant dyestuffs called the phthaleins.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a colorless acid used to make dyes and perfumes


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