/prɪˈzʌmpʃn/
pre·sump·tion AW
BrE /prɪˈzʌmpʃn/
NAmE /prɪˈzʌmpʃn/
[C]
something that is thought to be true or probable
There is a general presumption that the doctor knows best.
[U] (formal)
behaviour that is too confident and shows a lack of respect for other people
[U, C] (law)
the act of supposing that sth is true, although it has not yet been proved or is not certain
Everyone is entitled to the presumption of innocence until they are proved to be guilty.