/ Dictionary / Index I Isenheim Altarpiece*: Meaning and Definition of Find definitions for: I'sen•heim Al'tarpiece Pronunciation: (ē'zun-hīm"), [key] an altarpiece (1510?–15?) painted by Matthias Grünewald. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. -ise Isenland 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