What is "zombie strip"

n. A newspaper or magazine strip cartoon that is continued by others following the death or retirement of its originator.

In the comic-strip business, a zombie strip (also known as a "legacy strip") is one whose creator has died or retired, but which continues to exist with new editions in publication. The strips are taken over by others, often relatives of the originator. Zombie comic strips are often criticized as lacking the "spark" that originally made the strip successful.