- the study of sleep and hypnosis
WordReference Random House Unabridged Dictionary of American English © 2026
hyp•nol•o•gy
(hip nol′ə jē),USA pronunciation n.
hyp•no•log•ic
(hip′nl oj′ik),USA pronunciation hyp′no•log′i•cal, adj.
hyp•nol′o•gist, n.
- Physiologythe science dealing with the phenomena of sleep.
- 1885–90; hypno- + -logy
Collins Concise English Dictionary © HarperCollins Publishers::
hypnology /hɪpˈnɒlədʒɪ/ n