- a subsequent revision of an established story in film, TV, video games, or comics: In an awkward retcon of his origin story, the hero’s parents survived the attack but suffered complete memory loss.
- to later revise (an established element of a fictional story): The writers retconned the origin of her powers, newly attributing them to alien ancestry.
Origin of retcon
First recorded in 1980–85; a shortening of retroactive continuity
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018