Aonia UK /eɪˈəʊ.ni.ə/US /eɪˈoʊ.ni.ə/ noun1 •(historical) An ancient region of Greece: possibly Boeotia, or possibly the part of Boeotia containing the mountains Helicon and Cithaeron, and thus sacred to the Muses, whom Ovid calls the Aonides.
