I think I first came across that word in The Plague by Albert Camus, but didn't know quite what it meant back then other than that it had a negative connotation. Kudos to 9900giljerky for making me look it up finally.
Ah,
The Plague. From that I also learned that truck is apparently also a verb that has nothing to do with big rigs, truckers, or the sort. It took me quite some time to be willing to willing truck with the idea that "truck" could appear in a legitimate academic discourse. That book has all sorts of odd words and such uses (and it's easier to read that most books with the same).
As for Project Kid, Kid is Schala's daughter-clone. That title implies that Kid is no more "Lavos" than Schala ever was. Of course, all humans supposedly have Lavos' taint.
Now if you really want to ponder something, that game script from CC implies that the battle with the Time Devourer just determined its course of evolution; not its demise. It might still exist, evolving in a different way from the Time Devouring being that Belthasar feared.