σ

Definition from Wiktionary, the free dictionary
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See also: ς, Σ, σ., and σ'
Greek lc sigma1.png
σ U+03C3, σ
GREEK SMALL LETTER SIGMA
ς
[U+03C2]
Greek and Coptic τ
[U+03C4]

Translingual[edit]

Symbol[edit]

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.

Greek[edit]

Alternative forms[edit]

  • ς (s) (only at the end of a word)

Letter[edit]

σ (s) (lowercase, uppercase Σ)

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

See also[edit]