What is reanimate?

Some articles on reanimate:

Herbert West–Reanimator - Plot Summary
... and as a final act of twisted respect for his former rival, West steals his corpse to reanimate ... Halsey does in fact reanimate, but is inexplicably less intelligent and more violent than their previous experiment ... been waiting for the narrator to return so that the two of them can reanimate the body together ...
Silversun - Episodes - Season 2
... Zandie gets angry that they are going to reanimate the clone, and tries to make it come to life, wake up and begin to dream ... everything in the ship begins to get hotter, even the crion pods, and if they melt and reanimate, the people inside could have mental and physical problems for the rest of their lives! As ... was booby-trapped, and in one hour, all of the people in suspended animation on the Infinity would reanimate ...