/ Dictionary / Index P polder: Meaning and Definition of Find definitions for: pol•der Pronunciation: (pōl'dur), [key] — n. a tract of low land, esp. in the Netherlands, reclaimed from the sea or other body of water and protected by dikes. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: polder (Thesaurus) polar valence pole Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language