cre·o·sol noun alsocre·a·sol\ˈkrēəˌsōl, -ˌsȯl\ (-s) Etymology: International Scientific Vocabulary creosote + -ol; probably originally formed as German kreosol : a colorless aromatic phenol CH3O(CH3)C6H3OH obtained from beechwood tar and guaiacum resin; 2-methoxy-para-cresol