AtticPronunciation: /ˈatɪk/Definition of Attic adjective relating to ancient Athens or Attica, or the dialect of Greek spoken there. noun [mass noun] the dialect of Greek used by the ancient Athenians. It was the chief literary form of classical Greek. Origin: late 16th century: via Latin from Greek AttikosAttic in other Oxford dictionaries Definition of Attic in the US English dictionary