/ Dictionary / Index I isostere: Meaning and Definition of Find definitions for: i•so•stere Pronunciation: (ī'su-stēr"), [key] — n. a compound isosteric with one or more other compounds. a line on a map or chart connecting points of equal atmospheric density. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. isostemonous isosteric Related Content Daily Word Quiz: supine Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language