noun Informal.

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. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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Contemporary Examples of fanfic

British Dictionary definitions for fanfic



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