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_(physics).
  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]