Source : Webster's Revised Unabridged Dictionary (1913)

Misapprehension \Mis*ap`pre*hen"sion\, n.
   A mistaking or mistake; wrong apprehension of one's meaning
   of a fact; misconception; misunderstanding.

Source : WordNet®

misapprehension
     n : an understanding of something that is not correct; "he
         wasn't going to admit his mistake"; "make no mistake
         about his intentions"; "there must be some
         misunderstanding--I don't have a sister" [syn: {mistake},
          {misunderstanding}]