\Pan*de"an\, a. [From 4th {Pan}.]
Of or relating to the god Pan.
{Pandean pipes}, a primitive wind instrument, consisting of a
   series of short hollow reeds or pipes, graduated in length
   by the musical scale, and fastened together side by side;
   a syrinx; a mouth organ; -- said to have been invented by
   Pan. Called also {Pan's pipes} and {Panpipes}.