/ Dictionary / Index S sustentation: Meaning and Definition of Find definitions for: sus•ten•ta•tion Pronunciation: (sus"tun-tā'shun), [key] — n. maintenance in being or activity; the sustaining of life through vital processes. provision with means or funds for upkeep. means of sustaining life; sustenance. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: sustentation (Thesaurus) sustentacular sustention 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