/ Dictionary / Index M Middle Atlantic States: Meaning and Definition of Find definitions for: Mid'dle Atlan'tic States' Pronunciation: [key] New York, New Jersey, and Pennsylvania. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Middle America middle-born Related Content Daily Word Quiz: philtrum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language