ionian sea ionian order • ionic · · · Info · Definitions · Characters · · ionian sea · · Text Common · · Latin · · Scripts 10 · · Length 4 · · Syllables Definitions · · · (noun) an arm of the Mediterranean Sea between western Greece and southern Italy. Synonyms: Ionian Sea. · · Noun Definition 1 Characters · · space U+0020 a latin small letter a U+0061 e latin small letter e U+0065 i latin small letter i U+0069 n latin small letter n U+006E o latin small letter o U+006F s latin small letter s U+0073