/ Dictionary / Index I isochor: Meaning and Definition of Find definitions for: i•so•chor Pronunciation: (ī'su-kôr"), [key] — n. Physics. for a given substance, a curve graphing temperature against pressure, when the volume of the substance is held constant. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. isocheim isochromatic Related Content Daily Word Quiz: pundit Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language