(Greek mythology) The god and personification of sleep. The son of Nyx and Erebus, twin brother of Thanatos, husband of Pasithea, and the father of the Oneiroi. His Roman counterpart is Somnus.

Sleep. / Hypnosis.

A trancelike state, artificially induced, in which a person has a heightened suggestibility, and in which suppressed memories may be experienced. / Any of various sleep-like conditions.

plural of hypnosis

plural of hypnoscope

(dated) An instrument intended to determine a person's susceptibility to hypnotic influences.

sedation by hypnosis

plural of hypnosedative

(medicine) A material that is both hypnotic and sedative

seduction by means of hypnosis