v. & n.
--v.tr.
1. (often foll. by that + clause) assume as a necessary condition, esp. as a basis for reasoning; take for granted.
2 claim.
3 (in ecclesiastical law) nominate or elect to a higher rank.
--n.
1. a thing postulated.
2 a fundamental prerequisite or condition.
3 Math. an assumption used as a basis for mathematical reasoning.
Derivatives:
postulation n.
Etymology: L postulare postulat- demand