1. With regard to perception
   "this task is perceptually very difficult"

See also: perceptual

• tonic epilepsy
• tonic key
• tonic solfa
• tonic water
• tonicity
• tonight
• tonite
• tonk
• tonka bean
• tonka bean tree
• tonnage
• tonnage duty
• tonne
• tonneau
• Tonocard
• tonometer
• tonometry
• tons
• tonsil
• tonsilla
• tonsilla adenoidea
• tonsilla pharyngealis
• tonsillectomy
• tonsillitis
• tonsorial