/ Dictionary / Index I Ischia: Meaning and Definition of Find definitions for: Is•chia Pronunciation: (ē'skyä), [key] — n. an Italian island in the Tyrrhenian Sea, W of Naples: earthquake 1883. 18 sq. mi. (47 sq. km). a seaport on this island. 14,139. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: ischia (Thesaurus) ischemia ischium 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