/ Dictionary / Index M mid-Atlantic: Meaning and Definition of Find definitions for: mid-At•lan•tic Pronunciation: (mid'at-lan'tik), [key] — adj. using, manifesting, or characterized by a mixture of American and British behavior or speech. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: mid-atlantic (Thesaurus) Midas touch Mid-Atlantic Ridge Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language