/ Dictionary / Index S sustentacular: Meaning and Definition of Find definitions for: sus•ten•tac•u•lar Pronunciation: (sus"tun-tak'yu-lur), [key] — adj. Anat. supporting. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: sustentacular (Thesaurus) sustenance sustentation 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