Thymol \Thym"ol\, n. [Thyme + -ol.] (Chem.)
A phenol derivative of cymene, {C10H13.OH}, isomeric with
carvacrol, found in oil of thyme, and extracted as a white
crystalline substance of a pleasant aromatic odor and strong
antiseptic properties; -- called also {hydroxy cymene}.
[1913 Webster]