assumption assumption /əˈsʌmpʃən/

noun

1. () A statement that is assumed to be true and from which a conclusion can be drawn  ( premiss , premise , assumption )
   a statement that is assumed to be true and from which a conclusion can be drawn
    On the assumption that he has been injured we can infer that he will not play
   on the assumption that he has been injured we can infer that he will not play
   
2. () A hypothesis that is taken for granted  ( supposal , supposition , assumption )
   a hypothesis that is taken for granted
    Any society is built upon certain assumptions
   any society is built upon certain assumptions
   
3. () The act of taking possession of or power over something  ( laying claim , assumption )
   the act of taking possession of or power over something
    His assumption of office coincided with the trouble in Cuba
   his assumption of office coincided with the trouble in Cuba
    The Nazi assumption of power in 1934
   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 acquired all the company's assets for ten million dollars and the assumption of the company's debts
   
4. The act of assuming or taking for granted  ( assumption )
   the act of assuming or taking for granted
    Your assumption that I would agree was unwarranted
   your assumption that I would agree was unwarranted
   
5. Audacious (even arrogant) behavior that you have no right to  ( assumption , effrontery , presumption , presumptuousness )
   audacious (even arrogant) behavior that you have no right to
    He despised them for their presumptuousness
   he despised them for their presumptuousness
   

 Assumption

1. (Christianity) the taking up of the body and soul of the Virgin Mary when her earthly life had ended  ( Assumption )
   (Christianity) the taking up of the body and soul of the Virgin Mary when her earthly life had ended
   
2. Celebration in the Roman Catholic Church of the Virgin Mary's being taken up into heaven when her earthly life ended; corresponds to the Dormition in the Eastern Orthodox Church  ( Assumption , Assumption of Mary , August 15 )
   celebration in the Roman Catholic Church of the Virgin Mary's being taken up into heaven when her earthly life ended; corresponds to the Dormition in the Eastern Orthodox Church