Hy`dro*qui"none (?), n. [Hydro-, 2 + quinone.] Chem.
A white crystalline substance, C6H4(OH)2, obtained by the reduction of quinone. It is a diacid phenol, resembling, and metameric with, pyrocatechin and resorcin. Called also dihydroxy benzene.
© Webster 1913.