Pei'sias
(*Pei/sias).1. An Argive general. In B. C. 366, when Epaminondas was preparing to invade Achaia, Peisias, at his instigation, occupied a commanding height of Mount Oneium, near Cenchreae, and thus enabled the Thebans to make their way through the isthmus, guarded though it was by Lacedaemonian and Athenian troops. (Xen. Hell. 7.1.41; Diod. 15.75.)