- The name for the eighteenth letter of the Classical and Modern Greek, the nineteenth letter of Old and Ancient.
- (mathematics): the symbol (Î£) is used to indicate summation of a set or series.
- (statistics): the symbol (Ïƒ) is used to indicate one standard deviation from the mean, particularly in a normal distribution.
5 letters in word "sigma": A G I M S.
Anagrams of sigma:
Words found within sigma: