Other Definitions
sigma (dict)

Sigma

• Sigma (upper case Σ, lower case σ, alternative ς) is a letter in the Greek alphabet. See Sigma (letter).

• The upper-case letter Σ is used as a symbol for the summation operator forming a series in mathematics.

• The upper-case letter Σ is used as a symbol for a certain alphabet of a language, or of some other object dependent on an alphabet; expressed in mathematical terms, eg "the language defined by alphabet Σ={a,b,c} and the rules ..."

• The lower-case letter σ is used as a symbol for the standard deviation of a population in statistics.

• The lower-case letter σ is used as a symbol for the divisor function in number theory.

• The lower-case letter σ is used as a symbol for the Stefan-Boltzmann constant of radiation in physics.

• sigma₁ and sigma₂ are cell receptors in biochemistry and pharmacology.

• The lower-case letter σ is used as a symbol for the Sigma factor of RNA polymerase in biology.

• Sigma is the name of the main villain from the video game series Mega Man X.

• Sigma Corporation is a manufacturer of cameras, lenses and camera accessories.

• A model of handgun manufactured by Smith and Wesson.

• The Mitsubishi Motors Corporation car known as the Mitsubishi Sigma (variant of world-wide released Mitsubishi Galant).

<< Previous Word Browser Next >>
feng hsiung hsu world chess championship heavy weapons platoon bridgeport, connecticut brigade corps fruit fly cavalier poet non commissioned officer halibut k y jelly	rebbe skid row (album) ryan adams u.s. 2nd infantry division interferometry greek numerals lubovitch al sharpton thin lizzy chi (greek letter) phi (letter)	upsilon tau meet the press uriah heep (band) chamomile rho wham! pi (letter) qoppa wishbone ash sampi	altocumulus altostratus stratocumulus nimbostratus omicron cirrocumulus cirrostratus xi stratus cloud nu (letter) carlos vives