Well firstly let's be clear about the definition of death:
'the irreversible cessation of all biological functions that sustain a living organism.'
So if it isn't irreversible then there isn't death.
1)I guess, practically speaking that state is itself dependent on the ability to resuscitate. Which is dependent on available technique and technology
2) The NT which would not have that technology states that Jesus was beyond resuscitation acknowledges that, as they would say his cessation of biological function was irreversible.
3) You would acknowledge that your definition is naturalistic and as such factors out the supernatural. So what we have to think about is, as a naturalistic statement does it rule out God's intervention(philosophical naturalism) or merely make no comment on it(methodological naturalism). I think here were are getting to a difference between naturalism and materialism.
4) As we have arrived at materialism we can examine the correctness of the definition itself, because in materialism Life boils down as does everything to be merely the certain arrangement of matter. Matter can be rearranged with the appropriate technology.
5) What is a chap like yourself, an advocate of a circular universe and against the linear time doing arguing irreversibility? Here you people are arguing for it as a natural process while actually arguing that the natural state is circularity and reversibility and cause and effect not necessary.
It is confusion in these matters that makes naturalism suspect because of it's appeals to contradictions.
That I'm afraid has to be all for now but I appreciate, Professor, your willingness to have a discussion about it.