As an old and now retired medic. My personal definition of dead was if you made into the back of my amp-a-lamps or not. If you did you weren't dead-- you were merely having a bit of a bad day. I might have needed to do your breathing for you and I might have needed to make your heart pump blood. But until some doctor somewhere decided you weren't worth his time and effort, you were still alive. Because I don't haul dead people.

So, by my definition as a trained and professional medical person, you where never dead-dead. Just someone have a bad day among many others having a bad day at that time.

And how is lichdom treating you? Have you raised an army of skeleton warriors yet?

But if you've died, then were undead, and then died again, you'd be un-undead right? So alive? It's basic double jeopardy.