Definition of thymol in English:


Pronunciation /ˈTHīmôl/ /ˈθaɪmɔl/ /ˈTHīˌmäl/ /ˈθaɪˌmɑl/


  • A white crystalline compound present in oil of thyme and used as a flavoring and preservative.

    Alternative name: 2-isopropyl-5-methylphenol; chemical formula: C₁₀H₁₃OH

    ‘Other natural antimicrobials include the phenolic compounds thymol, found in thyme, oregano and sage, and eugenol, the main flavour ingredient of cloves and allspice.’
    • ‘Listerine also contains essential oils from herbs including eucalyptol, thymol, methyl salicylate and menthol.’
    • ‘Several of these - sage, rosemary, thyme, horsebalm and mountain dittany - are rich in thymol and carvacrol, compounds that help muscles relax.’
    • ‘The combination of thymol, eucalyptol, methyl salicylate and menthol in an alcohol base may have antifungal activity.’
    • ‘Some ingredients added to the water, e.g. menthol, eucalyptus, camphor, thymol and pine oil also give a sensation of clearing the passageways.’


Mid 19th century from Greek thumon ‘thyme’+ -ol.