hypnotic UK /hɪpˈnɒ.tɪk/US /hɪpˈnɑ.tɪk/adjective 4noun 2forms 3 adjective4 •Of or relating to hypnosis or hypnotism. •Capturing a person's attention to the exclusion of all else, as if placing them into a trance.Phyllis St. James' hypnotic "Mystic Stranger" always blows my mind and you'll find it included in this brilliant set by the sadly underrated Ms Haywood as well as the stunning ballad "Someone". — 1990 •Inducing sleep; soporific. •(no longer used) Dormant.hypnotic seeds noun2 •A soporific substance."He's had a strong hypnotic administered to him," said the doctor. "He'll wake perfectly all right in the morning.[…]" — 1929 •A person who is, or can be, hypnotized. formshypnotics · more hypnotic · most hypnotic