柯林斯詞典factorial /f?k?t??r??l/ 1. N the product of all the positive integers from one up to and including a given integer. Factorial zero is assigned the value of one: factorial four is 1?×?2?×?3?×?4. Symbol: n!, where n is the given integer 堦乘2. ADJ of or involving factorials or factors 堦乘的 返回 factorial