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4 definitions found

From: DICT.TW English-Chinese Dictionary 英漢字典

 sig·ma /ˈsɪgmə/
 希臘語的第十八個字母

From: Network Terminology

 sigma
 西格瑪 總和

From: Webster's Revised Unabridged Dictionary (1913)

 Sig·ma n.; pl. Sigmas   The Greek letter or English S, or s). It originally had the form of the English C.
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From: WordNet (r) 2.0

 sigma
      n : the 18th letter of the Greek alphabet