noc·tam·bu·lism (nŏk-tām'byə-lĭz'əm) n. See sleepwalking.
[noct(i)- + Latin ambulāre, to walk + -ism.] noc·tam'bu·list n.
sleep·walk·ing (slēp'wô'kĭng) n. The act or an instance of walking or performing another activity associated with wakefulness while asleep or in a sleeplike state. Also called noctambulism, somnambulism.