/ Dictionary / Index S superbaby: Meaning and Definition of Find definitions for: su•per•ba•by Pronunciation: (s'pur-bā"bē), [key] — pl. -bies. an infant whose mental development and language acquisition are stimulated and presumably accelerated by certain teaching methods. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. superb superblock 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