σ
Appearance
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Character variations
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Translingual
[edit]Symbol
[edit]σ
- (mathematics, statistics) Standard deviation.
- (mathematics) Sum of divisors.
- (mathematics) Braid group algebra.
- (physics, scattering) Cross section.
- (linguistics, phonology) Syllable.
- (IPA, obsolete) a labialized alveolar fricative: identified as IPA [θʷ] or [sᶲ], equivalent to Shona ⟨ȿ⟩.
- See also: ƍ
- (spatial databases) The select operation.
- (physics) The Stefan-Boltzmann constant.
- (chemistry) A shielding constant.
Ancient Greek
[edit]Alternative forms
[edit]Etymology
[edit]Derived from its majuscule counterpart Σ.
Letter
[edit]σ • (s) (lowercase, uppercase Σ)
- Lower-case sigma (σίγμα), the 18th letter of the ancient Greek alphabet. It represented the voiceless alveolar fricative /s/. It is preceded by ρ and followed by τ.
Derived terms
[edit]See also sigma
See also
[edit]- (Greek-script letters) Α α, Β β, Γ γ, Δ δ, Ε ε, Ζ ζ, Η η, Θ θ, Ι ι, Κ κ, Λ λ, Μ μ, Ν ν, Ξ ξ, Ο ο, Π π, Ρ ρ, Σ σ ς, Τ τ, Υ υ, Φ φ, Χ χ, Ψ ψ, Ω ω
- (non-Classical letters) Ϝ ϝ, Ͷ ͷ, Ͱ ͱ, Ϻ ϻ, Ϙ ϙ, Ͳ ͳ
- (punctuation) · ;
- (diacritics) ᾿ ῾ ◌́ ◌̀ ῀ ¨
Greek
[edit]Alternative forms
[edit]- ς (s) (only at the end of a word)
Letter
[edit]σ • (s) (lowercase, uppercase Σ)
- The lower case letter sigma (σίγμα), the 18th letter of the modern Greek alphabet.
See also
[edit]Categories:
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