Meaning of hydroquinone

hy•dro•qui•none

Pronunciation: (hī"drō-kwi-nōn', -dru-kwin'ōn), [key]
— n. Chem.
  1. a white, crystalline compound, CHO, formed by the reduction of quinone: used chiefly in photography and to inhibit autoxidation reactions. Also called
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.