Sigma meaning

sĭgmə
The 18th letter of the Greek alphabet.
noun
0
0
The standard deviation of a given probability distribution or a given set of data.
noun
0
0
The eighteenth letter of the Greek alphabet (Σ, σ, ς)
noun
0
0
A sigma baryon.
0
0
The name for the eighteenth letter of the Classical and Modern Greek, the twentieth letter of Old and Ancient.
noun
0
0
Advertisement
(mathematics) The symbol Σ, used to indicate summation of a set or series.
noun
0
0
(statistics) The symbol σ, used to indicate one standard deviation from the mean, particularly in a normal distribution.
noun
0
0
A sigma factor.
noun
0
1
A sigma factor.
noun
0
1

Origin of sigma

  • Greek sīgma of Phoenician origin smk in Semitic roots

    From American Heritage Dictionary of the English Language, 5th Edition