/ Dictionary / Index S superstore: Meaning and Definition of Find definitions for: su•per•store Pronunciation: (s'pur-stôr", -stōr"), [key] a very large store, esp. one stocking a wide variety of merchandise. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. superstitious superstratum 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