/ Dictionary / Index S superior vena cava: Meaning and Definition of Find definitions for: supe'rior ve'na ca'va Pronunciation: [key] — pl. superior venae cavae. See underSee illus. underAlso called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. superior planet superjacent Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language