Breadcrumb Home > Dictionary > Index S somnambulism: Meaning and Definition of Find definitions for: som•nam•bu•lism Pronunciation: (som-nam'byu-liz"um, sum-), [key] — n. sleepwalking. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: somnambulism (Thesaurus) somnambulate somnifacient TrendingHere are the facts and trivia that people are buzzing about. Did Birds Evolve from Dinosaurs? The Twelve Dancing Princesses Current Events This Week: January 2023 African Americans by the Numbers Andersen's Fairy Tales: Contents The Celtic Twilight: A Teller of Tales ✖ Related Content Daily Word Quiz: saturnine Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language