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

• doorcase
• doorframe
• doorhandle
• doorjamb
• doorkeeper
• doorknob
• doorknocker
• doorlock
• doorman
• doormat
• doornail
• doorplate
• doorpost
• doorsill
• doorstep
• doorstop
• doorstopper
• doorway
• dooryard
• doos
• doosra
• doover
• doozie
• doozy
• dop