Ὄα Save Ὄα, Oa, Oea. Attic deme Could not find Ὄαθεν in Logeion dictionaries. Ὄαθεν Proper-name adverb of Ὄα See Ὄαθεν in Morpho Pleiades Ὄα — Oai (Attica), Pleiades 580037