Definition of prestate:
(n) :
(computer science) The state that exists before an operation.
(adj) :
Prior to status as a state.
(adj) :
More primitive than a state.
(v) :
(transitive, law, otherwise archaic) To assume responsibility for, undertake.
(v) :
(transitive, law, otherwise archaic) To indemnify, guarantee, secure (against loss or legal liability).
(v) :
(transitive, law, otherwise archaic) To vouch for, support.