sigma
Pronunciation: /ˈsɪɡmə/
The English word “sigma” has 5 meanings listed here.
noun
- The eighteenth letter of the Classical and Modern Greek alphabets (Σ, σ), the twentieth letter of Old and Ancient.
- The symbol Σ, used to indicate summation of a set or series.
- The symbol σ, used to indicate one standard deviation from the mean, particularly in a normal distribution.
- A sigma male (a self-reliant and assertive male).
adjective
- Possessing characteristics of a sigma male.
Etymology
From Ancient Greek σῖγμα (sîgma), probably from the root σῑγ- (sīg-) as seen in σίζω (sízō, “to hiss”) + -μα (-ma, nominal suffix).
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Definitions are from Wiktionary, extracted by Kaikki.org, and are available under the CC BY-SA 4.0 licence.