The term “hypnosis” comes from the ancient Greek word “ὕπνωσις” (hypnōsis), which means “sleep” or “putting to sleep.” It is derived from the Greek word “ὕπνος” (hypnos), meaning “sleep.” Hypnosis refers to a trance-like state of focused attention, heightened suggestibility, and deep relaxation. Despite its roots in the concept of sleep, hypnosis is distinct from actual sleep, as the subject remains awake and alert but in an altered state of consciousness.