/ Dictionary / Index I Istria: Meaning and Definition of Find definitions for: Is•tri•a Pronunciation: (is'trē-uIt.ēs'tryä), [key] — n. a peninsula at the N end of the Adriatic, in SW Slovenia and W Croatia. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Istomin ISV 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