Source : Webster's Revised Unabridged Dictionary (1913)

Protracted \Pro*tract`ed\, a.
   Prolonged; continued.

   {Protracted meeting},a religious meeting continued for many
      successive days. [U. S.] -- {Pro*tract"ed*ly}, adv. --
      {Pro*tract"ed*ness}, n.

Source : WordNet®

protractedly
     adv : in a slow, leisurely or prolonged way; "her voice was swift,
           yet ever the last words fell lingeringly" -Rossetti
           [syn: {lingeringly}]