/ Dictionary / Index Y young adult: Meaning and Definition of Find definitions for: young' adult' Pronunciation: [key] a teenager (used esp. by publishers and librarians). a person in the early years of adulthood. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. young youngberry Related Content Daily Word Quiz: hedonist Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language