presumption /pri╵zʌmpʃn; pri╵zʌmpʃən/ n （a） [U] 〜 （of sth） presuming sth to be true or the case 假定; 认定; 假设; 推测: presumption of her innocence by the court 法庭对她无罪的推定. （b） [C] thing presumed to be true or very probable 假定属实的事物; 被认定的事物; 极为可能的事物: The article makes too many false presumptions. 这篇文章中凭空臆测的成分太多. 　＊ We╵re having the party in the garden on the presumption that it╵s not going to rain. 我们认为不会下雨╷ 所以在花园里举行宴会. [U] behaviour that is too bold; arrogance 放肆; 傲慢: She was infuriated by his presumption in making the travel arrangements without first consulting her. 他事先没和她商量便做好旅行安排╷ 她对他自作主张很生气.