Nouns

(n)Ioniana member of one of four linguistic divisions of the prehistoric Greeks, spoken in the central west coast of Asia Minor, the islands of Chios and Samos, islands across the central Aegean, and on the large island of Euboea north of Athens
(n)Ionianthe ancient Greek inhabitants of Attica and related regions in Ionia

Adjectives

(a)Ionianof or pertaining to the ancient Ionians who lived in Attica and related territories, to their Ionic dialect of Greek, or to their culture