WordCodex

σ

See also: ς, Σ, σ., and σ'

σ - Translingual

Symbol

σ

  1. (mathematics, statistics) Standard deviation.
  2. (mathematics) Sum of divisors.
  3. (mathematics) Braid group algebra.
  4. (physics, scattering) Cross section.
  5. (linguistics, phonology) Syllable.
  6. (spatial databases) The select operation.
  7. (physics) The Stefan-Boltzmann constant.
  8. (chemistry) A shielding constant.

σ - Ancient Greek

Alternative forms

  • ϲ (s) – lunate sigma
  • ς (s) – word-final position

Letter

σ • (s) (lowercase, uppercase Σ)

  1. 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

See also sigma

σ - Greek

Alternative forms

  • ς (s) (only at the end of a word)

Letter

σ • (s) (lowercase, uppercase Σ)

  1. The lower case letter sigma (σίγμα), the 18th letter of the modern Greek alphabet.
Meaning and Definition of σ
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