Acronyms, Abbreviations, and Initialisms.
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The meaning of the Acronym SIGMA is...

SIGMA is

System For Integrated Generalised Modelling Analysis
Sustainability Integrated Guidelines for Management and Associates

More Meanings For SIGMA:

System Integrated Genuinely Manipulated Assembly
Society Of Independent Gasoline Marketers Of America
System For Integrated Generalised Modelling Analysis
Sustainability Integrated Guidelines for Management and Associates

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