/ Dictionary / Index A Atlanticist: Meaning and Definition of Find definitions for: At•lan•ti•cist Pronunciation: (at-lan'tu-sist), [key] — n. a supporter of close military, political, and economic cooperation between Western Europe and the U.S. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Atlantic Intracoastal Waterway Atlantic Ocean Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language