/ Dictionary / Index S superscript: Meaning and Definition of Find definitions for: su•per•script Pronunciation: (s'pur-skript"), [key] — adj. superior (def. 10). —n. superior (def. 12). an address on a letter; superscription. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: superscript (Thesaurus) superscribe superscription 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