phenol
phe.nol \'fe--.no-l, fi-'\ \fi-'no--lik, -'na:l-ik\ n [ISV phen- + -ol] 1: a caustic poisonous crystalline acidic compound C6H5OH prese nt in coal tar and wood tar that in dilute solution is used as a disinfectant 2: any of various acidic compounds analogous to phenol and regarded as hydr oxyl derivatives of aromatic hydrocarbons - phe.no.lic aj