Hi, I just came across this thread, and I'm concerned the definition you've arrived at doesn't quiiite convey the normal usage of the term.
A teleological narrative is one in which all the events are leading to a final culmination that will make sense of all that has gone before.
It's a term often applied to history -- a teleological narrative of history would be one in which mankind is constantly building towards bigger and better things -- it's a model of history as *progress*. Eg the industrial revolution was a step forward from the medieval period that preceded it, and our increasing globalisation of today is another step forward again. Whereas someone who was opposed to such a teleological model might argue, for example, that these events have led to increasingly isolated individuals, and in that respect people were a lot better off in the medieval period.
Postmodernists, and others, generally use the term "teleological narrative" in a bit of a disparaging way -- they see it as an overly simplistic way of looking at the world. That quotation Anglika cited is criticising George Levine's study by describing it as a teleological narrative -- if you google the quote to find the article it came from, you'll see that the author is criticising George Levine's study for being too narrow in its point of view.
Hope that helps! The most important thing to remember is that the phrase "teleological narrative" is rarely used in a neutral way -- normally it will be an implicit criticism of whatever it is that is described by the term.