Lewis Short
(adjective) : Pănăthēnāĭcus, a, um, , = Παναθηναικός
* Of or belonging to the Panathenoea (a popular festival of the Athenians); hence, subst.
* Pănăthēnāĭca, ōrum, n. (sc. solemnia), the Panathenoea, Varr. ap. Serv. Verg. G. 3, 113.
* Pănăthēnā-ĭcus, i, m. (sc. liber), a holiday oration of Isocrates pronounced at the Panathenoea, Cic. Or. 12, 38; id. Sen. 5, 13; cf. Aus. Prof. 1, 13.
Charlton T. Lewis, Charles Short, A Latin Dictionary