/ Dictionary / Index A audio book: Meaning and Definition of Find definitions for: au'dio book" Pronunciation: [key] a recording of an oral reading of a book, often in abridged form. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. audio audio cassette Related Content Daily Word Quiz: pedagogy Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language