Meaning of the word sigma in English

What does sigma mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

sigma

US /ˈsɪɡ.mə/
UK /ˈsɪɡ.mə/

Noun

1.

the eighteenth letter of the Greek alphabet (Σ, σ, or ς)

Example:
In mathematics, the capital sigma (Σ) is often used to denote summation.
The lowercase sigma (σ) represents standard deviation in statistics.
2.

a term used in internet culture to describe a self-reliant, independent, and often introverted individual who doesn't conform to traditional social hierarchies or expectations

Example:
He considers himself a sigma male, preferring solitude over social gatherings.
The concept of a sigma personality has gained traction in online communities.
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