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hydroquinone hī´drō kwin′ōn  [hy·dro·qui·none]
 
_(type) n.
a white, sweetish, crystalline compound, used in photographic developers and in medicine. Formula: C6H4(OH)2 .
 
(كيمياء) هِيدروكينون: مركَّبٌ أبْيَضُ حلوٌ متبلورٌ يُستعمَلُ في تظهيرِ الصُّوَرِ وله استعمالات طبيّة