/ Dictionary / Index S somnolent: Meaning and Definition of Find definitions for: som•no•lent Pronunciation: (som'nu-lunt), [key] — adj. sleepy; drowsy. tending to cause sleep. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: somnolent (Thesaurus) somnific Somnus Related Content Daily Word Quiz: stringent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language