/ Dictionary / Index S somnambulate: Meaning and Definition of Find definitions for: som•nam•bu•late Pronunciation: (som-nam'byu-lāt", sum-), [key] — -lat•ed, -lat•ing. to walk during sleep; sleepwalk. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: somnambulate (Thesaurus) Sommerfeld somnambulism Related Content Daily Word Quiz: acquiesce Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language