'Postulation' definitions:

Definition of 'postulation'

From: WordNet
noun
(logic) a declaration of something self-evident; something that can be assumed as the basis for argument [syn: postulation, predication]
noun
A formal message requesting something that is submitted to an authority [syn: request, petition, postulation]

Definition of 'Postulation'

From: GCIDE
  • Postulation \Pos`tu*la"tion\, n. [L. postulatio: cf. F. postulation.] The act of postulating, or that which is postulated; assumption; solicitation; suit; cause. [1913 Webster]