from The Century Dictionary.

  • noun A colorless compound found in coal-tar oil and prepared by the action of methyl chlorid on toluene in the presence of aluminium chlorid; 1, 2, 4, 5-tetramethyl benzene. It has an odor resembling that of camphor, crystallizes in leaves, melts at 79–80° C., and boils at 193–195° C.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Chem.) A colorless, crystalline, aromatic hydrocarbon, C6H2(CH3)4, off artificial production, with an odor like camphor.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun organic chemistry 1,2,4,5-tetramethylbenzene, an aromatic hydrocarbon used as a solvent and in the manufacture of pyromellitic acid.


from Wiktionary, Creative Commons Attribution/Share-Alike License

Latin durus, "hard" (because solid at ordinary temperatures), and -ene.


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