Ποσιδήϊος

A. sacred to Poseidon, Il. 2.506, h.Ap. 230; written Ποσείδιον ἄλσος in Str. 8.3.20; but the Att. form is Ποσιδεῖος, S. Fr. 506 (anap.).

2. Dor. Ποσιδάϊος [α] , ὁ (sc. μήν), a month at Epidaurus, IG 42(1).103.35; Hellenistic Ποσιδεῖος CIG 6850 (incert. loc.).

II. Ποσιδήϊον, τό, Ion. for Ποσιδεῖον (which is found in Inscr.Dėlos 372 A 158 (iii/ii B.C.)), temple of Poseidon, Od. 6.266; written Ποσείδιον in Paus. 2.34.9.

III. Ποσιδεῖα, τά, festival of Poseidon, IG 11(2).203 A 57, 287 A 89 (Delos, iii B.C.), Inscr.Dėlos 372 A 114 (iii/ii B.C.); written Ποσιδέα, IG 12.190.8.