sth that is taken as a fact or believed to be true without proof
the act of assuming
"on the assumption that he has been injured we can infer that he will not to play"
"any society is built upon certain assumptions"
"his assumption of office coincided with the trouble in Cuba"
"the Nazi assumption of power in 1934"
"he acquired all the company's assets for ten million dollars and the assumption of the company's debts"
"he despised them for their presumptuousness"
"your assumption that I would agree was unwarranted"
Can hang no weight upon my heart In its assumptions up to heaven.