oikos in English dictionary oikos Meanings and definitions of "oikos" noun (historical) A basic societal unit in Ancient Greece; a household or family line. noun (Christianity) Synonym of [i]kontakion[/i] ( hymn or poem recited as a dialogue) more Grammar and declension of oikos oikos (plural oikoi) more Oikos Sample sentences with "oikos" Declension Stem Try again Available translations Catalan Danish Dutch French German Hungarian Italian Portuguese Russian Spanish Ukrainian Authors