/ Dictionary / Index I Isthmian Games: Meaning and Definition of Find definitions for: Isth'mian Games' Pronunciation: [key] one of the great national festivals of ancient Greece, held every two years on the Isthmus of Corinth. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. isthmian isthmus Related Content Daily Word Quiz: acquiesce Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language