retcon
v.— «“Crisis On Infinite Earths” solved a DC crisis all right, but it wasn’t the problem of having multiple earths. It was the problem of 50 years of continuity complicating their existing characters.… “Crisis” let DC have good reason to retcon characters to whatever extent needed—heck, it practically demanded it.» —“Re: Infinite Earths” by Steve Simmons Usenet: rec.arts.comics Dec. 22, 1989. (source: Double-Tongued Dictionary)
Further reading
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What if, instead of being an inanimate object, a dictionary were alive? That’s the idea behind a lavishly illustrated new children’s book called The Dictionary Story (Bookshop|Amazon) by Oliver Jeffers and Sam Winston. This is part of a...