factorial

fæk'tɒ:riәl

n. the product of all the integers up to and including a given integer
a. of or relating to factorials

a. 因子的, 阶乘的, 代理商的
n. 阶乘
[计] 阶乘

23,162

使用频率

factorial 由词根 factor（因素、因子）和后缀 -ial（形容词后缀）组成，可以理解为与因子相关的东西。

例句

1. The factorial of five is 120.

五的阶乘是120。

2. We often use factorials in probability and statistics.

我们在概率和统计中常常使用阶乘。

3. To calculate the factorial of a number, you multiply it by all the smaller positive integers.

要计算一个数的阶乘，你需要将它乘以所有较小的正整数。