/prɪˈzju:m ||; prɪˈzjum/verb [T] to think that sth is true even if you do not know for sure; to suppose 推测；假设；假定: The house looks empty so I presume they are away on holiday. 房子看来空无一人，因此我推测他们度假去了。 ➔presumption /prɪˈzʌmpʃn ||; prɪˈzʌmpʃən/ noun [C]