/ Dictionary / Index I IJsselmeer: Meaning and Definition of Find definitions for: IJs•sel•meer Pronunciation: (ī'sul-mār"), [key] — n. a lake in the NW Netherlands: created by the diking of the Zuider Zee. 465 sq. mi. (1204 sq. km). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: ijsselmeer (Thesaurus) IJssel ijtihad Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language