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

See also: perceptual

• hullo
• Hulsea
• Hulsea algida
• Hulsea nana
• hum
• human
• human action
• human activity
• human being
• human beings
• human body
• human botfly
• human chorionic gonadotrophin
• human chorionic gonadotropin
• human death
• human dynamo
• human ecology
• human elbow
• human face
• human foot
• human gamma globulin
• Human Genome Project
• human growth hormone
• human head
• human immunodeficiency virus