/ Dictionary / Index O Oder-Neisse Line: Meaning and Definition of Find definitions for: O'der-Neis'se Line" Pronunciation: (ō'dur-nī'su), [key] the boundary between Poland and East Germany after World War II. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Oder Odessa Related Content Daily Word Quiz: serendipity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language