Īsaeus, i, m., = Ἰσαῖος.
I A Grecian orator of Chalcis , instructor of Demosthenes , Quint. 12, 10, 22.—
II A contemporary of the younger Pliny , also a Grecian orator , Plin. Ep. 2, 3 init. ; Juv. 3, 74.