au·toi·cous \(ˈ)ȯ|tȯikəs, (ˈ)ȯd.|ȯi-\adjective alsoautoecious Etymology:aut- + -oicous, -oecious (from Greek oikos dwelling + English -ous) — more at vicinity : having male and female organs on the same plant but on separate branches < certain mosses are autoicous > — compare dioicous, paroicous, synoicous