Read Edit View history 西格玛 xīgémǎ sigma Origin Definitions Defs Strokes Stroke Words Sentences Sents Senses Add sense 西格玛/ 西格瑪 xīgémǎ sigma proper name · sigma (Greek letter Σ, σ) 西格玛是第十八个希腊字母。 Edit Delete References Add reference No references for this word.