sigma
🇺🇸
/ˈsɪɡmə/
🇬🇧
/ˈsɪɡmə/
noun
R
The 18th letter in the Greek alphabet, which looks like 'S' and 'C' combined.
In mathematics, sigma is used as a symbol to represent the sum of a series of numbers.
在数学中，西格玛用作符号，表示一系列数字的总和。
translation
西格玛
词形变化
Plural
sigmas