/ Dictionary / Index I Isonzo: Meaning and Definition of Find definitions for: I•son•zo Pronunciation: (ē-zôn'tsô), [key] — n. a river in S Europe, flowing S from the Julian Alps in Yugoslavia to the Gulf of Trieste in Italy. 75 mi. (120 km) long. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. isonomy isooctane 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