Source : Webster's Revised Unabridged Dictionary (1913)

Misinterpretation \Mis`in*ter"pre*ta"tion\, n.
   The act of interpreting erroneously; a mistaken
   interpretation.

Source : WordNet®

misinterpretation
     n : putting the wrong interpretation on; "his misinterpretation
         of the question caused his error"; "there was no
         mistaking her meaning" [syn: {misunderstanding}, {mistaking}]