1. (medicine) mental retardation in which the person suffers a stiff, jerky gait, absent speech, excessive laughter and/or seizures

Encyclopedia: Angelman syndrome

• backdraught
• backdrop
• backed
• backer
• backfield
• backfile
• backfill
• backfire
• backflow
• backflowing
• backgammon
• backgammon board
• background
• background knowledge
• background level
• background music
• background noise
• background processing
• background radiation
• background signal
• backgrounder
• backgrounding
• backhand
• backhand drive
• backhand shot