fiction written by fans of a TV series, movie, etc., using existing characters and situations to develop new plots.
a work of fiction in this genre.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for fanfic
Contemporary Examples of fanfic
I suddenly realized at some point what it was that bugged me about Battlestar Galactica—it was fanfic!How ‘Battlestar Galactica,’ ‘Game of Thrones,’ and FanFiction Conquered Pop Culture
May 6, 2014
fiction written around previously established characters invented by other authors
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012