• WordNet 3.6
    • n cymene any of three isotopes of a colorless aromatic liquid hydrocarbon occurring in the volatile oil of cumin and thyme and used in the manufacture of synthetic resins
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Webster's Revised Unabridged Dictionary
    • n Cymene (Chem) A colorless, liquid, combustible hydrocarbon, CH3.C6H4.C3H7, of pleasant odor, obtained from oil of cumin, oil of caraway, carvacrol, camphor, etc.; -- called also paracymene, and formerly camphogen.
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Century Dictionary and Cyclopedia
    • n cymene A hydrocarbon (C10H14) occurring in the volatile oil of Roman cumin, in camphor, in the oil of thyme, etc., and prepared by treating oil of turpentine with oil of vitriol. It is a colorless, strongly refracting liquid, and has a pleasant odor of lemons. Also cymol and camphogen.
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In literature:

Besides a cymene and a toluene, which have already been shown to exist in rosin spirit, metaxylene was found to be present.
"Scientific American Supplement No. 275" by Various
Terebenthene belongs to the benzene or aromatic series, which can be shown from its connection with cymene.
"Scientific American Supplement, No. 711, August 17, 1889" by Various
In addition to the phenols, thymol or carvacrol, these oils contain cymene, thymene and pinene.
"The Handbook of Soap Manufacture" by W. H. Simmons
They yield from 3 to 6% of a volatile oil, the chief constituent of which is cymene aldehyde.
"Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 3" by Various
F. It consists chiefly of a terpene and cymene.
"Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 8" by Various