1. 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
   - hydroquinone

Derived forms: quinols

• Tommy
• Tommy gun
• tommyrot
• tomograph
• tomography
• tomorrow
• tompion
• tomtate
• tomtit
• ton
• tonal
• tonal language
• tonal pattern
• tonal system
• tonality
• tonally
• tondo
• tone
• tone arm
• tone deafness
• tone down
• tone ending
• tone language
• tone of voice
• tone poem