/ Dictionary / Index S superjacent: Meaning and Definition of Find definitions for: su•per•ja•cent Pronunciation: (s"pur-jā'sunt), [key] — adj. lying above or upon something else. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: superjacent (Thesaurus) superior vena cava superjet Related Content Daily Word Quiz: endear Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language