Set of beliefs and attitudes which glorify or accept death and reject immortality. Deathism became a particular moral issue from the late interplanetary period onwards, when advanced medical nanotech allowed an individual to prolong eir existence indefinitely. The widespread availability of reliable "copy" or mind upload technology in the First Federation period removed even the danger of accidental death, except for those who did not consider uploads to be part of their personal identity.
Immortality - Text by M. Alan Kazlev While literal physical immortality remains a contentious point in a universe that, although vast, is still finite, the wonders of modern medical nano mean that all citizens of the Civilized Galaxy, to say nothing of the higher toposophic ai, are potentially immortal; at least on angelnetted worlds. See also life-extension, afterlife.
Information-Theoretical Death - Text by Tim Freeman, in Anders Sandberg's Transhuman Terminology A being has reached information-theoretic death if a healthy state of that person could not possibly be deduced from the current state. The exact timing of information-theoretic death depends on details of how the brain or equivalent works and the kind of damage it has sustained, as well as the available technology and on the degree of fidelity to the original state. The current best estimates put it several hours after clinical death if hyperturing medicine is available.
Partial Death - Text by Anders Sandberg When an extended entity suffers partial irrevocable destruction, removing sizable aspects of the previous individuality. Legal concept intermediate between wounding and death in many jurisdictions.