novelizationnov‧el‧i‧za‧tion (also novelisation British English) /ˌnɒvəlaɪˈzeɪʃən $ ˌnɑːvələ-/ noun [countable] 
the story that was told in a film or television series, written afterwards as a book: 
the novelization of Terminator 2
the story that was told in a film or television series, written afterwards as a book: the novelization of Terminator 2