English Noun hydroxyquinol #chemistry a poisonous trihydroxy phenol, 1,2,4-trihydroxybenzene, C<sub>6</sub>H<sub>3</sub>(OH)<sub>3</sub>, used in organic synthesis
See also pyrogallol 1,2,3-trihydroxybenzene phloroglucinol 1,3,5-trihydroxybenzene