Bailly
v. Ποσειδῶν.
Bailly 2020 Hugo Chávez Gérard Gréco, André Charbonnet, Mark De Wilde, Bernard Maréchal & contributeurs / Licence Creative Commons Attribution - Pas d'Utilisation Commerciale - Pas de Modification — « CC BY-NC-ND 4.0 »
LSJ
ῶνος, ὁ, sixth month in the Athenian and some Ionic calendars, Anacr. 6, IG1². 377.17; later Ποσιδεών, in Att. inscrr., ib. 22.204.11 (iv BC), al., and at Delos, Tenos, Paros, ib. 11 (2).203 A 32, 56 (iii BC), 12(5).872.43 (iii BC), SIG 562.49 (iii BC) written Ποσειδεών in one inscr., ib. 1017.10 (Sinope, iii BC), and in codd. of Arist. HA 543a11, 570a32, etc. ; — Aeol. (?) Ποσιδάων, Hemerolog.Flor.
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)