/ Dictionary / Index P Pan American Union: Meaning and Definition of Find definitions for: Pan' Amer'ican Un'ion Pronunciation: [key] a former organization of American republics dedicated to furthering understanding and peace: replaced in 1970 by the secretariat of the Organization of American States. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Pan-Americanism panamiga Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language