Hypnosis is a noun and is defined as a trancelike state that resembles sleep but is induced by a person whose suggestions are readily accepted by the subject.
Hypnosis is one of the many words in the English language that has its roots in Greek mythology. In this case, the word hypnosis derives from the personification of sleep, Hypnos. According to legend, Hypnos lived in a cave in the underworld. His bed was large, made out of ebony, and was surrounded by plants that induced drowsiness. Although his cave is where day met night, no light or sound ever entered. Hypnos was a calm and gentle god and known to help sleeping humans in need.
If interested in copy editing or proofreading services email editingbychristina@gmail.com or visit editingbychristina.com.
Source
Merriam-Webster.com Dictionary, s.v. “hypnosis.”
Hypnos (mythology)
Editing by Christina 