verb.
To assume some truth without proof, usually for the purpose of reaching a conclusion based on that truth.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
verb.
require as a necessary antecedent or precondition
verb.
take for granted or as a given; suppose beforehand
Word Usage
"That said, such calls presuppose that Obama will be included in the "need to know" loop of any hardcore evidence of aliens contact ... and I very much doubt he will."