/ Dictionary / Index S sustenance: Meaning and Definition of Find definitions for: sus•te•nance Pronunciation: (sus'tu-nuns), [key] — n. means of sustaining life; nourishment. means of livelihood. the process of sustaining. the state of being sustained. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: sustenance (Thesaurus) sustaining program sustentacular Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language