from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. 1,2,4,5-tetramethylbenzene, an aromatic hydrocarbon used as a solvent and in the manufacture of pyromellitic acid.
from the GNU version of the Collaborative International Dictionary of English
- n. A colorless, crystalline, aromatic hydrocarbon, C6H2(CH3)4, off artificial production, with an odor like camphor.
from The Century Dictionary and Cyclopedia
- n. 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.
Latin durus, "hard" (because solid at ordinary temperatures), and -ene. (Wiktionary)