pann.[L. paean, Gr. paia`n, fr. Paia`n the physician of the gods, later, Apollo. Cf. Pon, Peony.]1. An ancient Greek hymn in honor of Apollo as a healing deity, and, later, a song addressed to other deities.()2. Any loud and joyous song; a song of triumph, joy, or praise.(De Quincey.)3. See Pon.()