Save Gender Feminine Usage Greek Mythology (Latinized) Scripts Νυκτηίς(Ancient Greek) Meaning & History Latinized form of Greek Νυκτηίς (Nykteis), a derivative of Greek νύξ (nyx) meaning "night" (compare the related names Nycteus and Nyx). In Greek mythology, this name was borne by the wife of King Polydorus of Thebes.