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sigma |
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sigma 1. the 18th letter in the Greek alphabet (Σ, σ or, when final, ς), a consonant, transliterated as S 2. Maths the symbol Σ, indicating summation of the numbers or quantities indicated sigma [′sig·mə] (invertebrate zoology) A C-shaped spicule.
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| The sprawling Shanghai complex, located on 89 acres of land, is the largest and most productive of all of Sigmas holdings, but there is more to the company than this one facility. The term "Six Sigma" is a measure of quality, with six sigmas being almost perfect, meaning almost nothing ever goes wrong. At that time, the experimenters had been bombarding thin films of copper or diamond with a beam of particles known as sigmas to create particles containing charm quarks (SN: 7/6/02, p. |
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