Source : Webster's Revised Unabridged Dictionary (1913)

Histrionic \His`tri*on"ic\, Histrionical \His`tri*on"ic*al\, a.
   [L. histrionicus: cf. F. histronique. See {Histrion}.]
   Of or relating to the stage or a stageplayer; befitting a
   theatre; theatrical; -- sometimes in a bad sense. --
   {His`tri*on"ic*al*ly}, adv.

         Tainted with false and histrionic feeling. --De
                                                  Quincey.

Source : WordNet®

histrionic
     adj : characteristic of acting or a stage performance; often
           affected; "histrionic gestures"; "an attitude of
           melodramatic despair"; "a theatrical pose" [syn: {melodramatic}]