a colorless, crystalline phenol, CHO, extracted from the volatile oil of thyme or made synthetically: used as an antiseptic, esp. in mouthwashes and nose and throat sprays, and in perfumery, embalming, microscopy, etc.
See thymol in American Heritage Dictionary 4
(thīˈmôlˌ, -mōlˌ)
noun
A white, crystalline, aromatic compound, C10H14O, derived from thyme oil and other oils or made synthetically and used as an antiseptic, a fungicide, and a preservative.