Lewis & Short

Pănăthēnāĭcus, a, um, adj., = Παναθηναικός, of or belonging to the Panathenœa (a popular festival of the Athenians); hence, subst.

  1. I. Pănăthēnāĭca, ōrum, n. (sc. solemnia), the Panathenœa, Varr. ap. Serv. Verg. G. 3, 113.
  2. II. Pănăthēnā-ĭcus, i, m. (sc. liber), a holiday oration of Isocrates pronounced at the Panathenœa, Cic. Or. 12, 38; id. Sen. 5, 13; cf. Aus. Prof. 1, 13.