Source : Webster's Revised Unabridged Dictionary (1913)

Panegyric \Pan`e*gyr"ic\, Panegyrical \Pan`e*gyr"ic*al\, a. [L.
   panegyricus, Gr. panhgyrico`s, from ? an assembly of the
   people, a high festival; pa^, pa^n all + ?, an assembly.]
   Containing praise or eulogy; encomiastic; laudatory.
   ``Panegyric strains.'' --Pope. -- {Pan`e*gyr"ic*al*ly}, adv.

         Some of his odes are panegyrical.        --Dryden.

Source : WordNet®

panegyrical
     adj : formally  expressing praise [syn: {encomiastic}, {eulogistic},
            {panegyric}]