Definition of Sigma:
See Six Sigma.
The eighteenth letter of the Greek alphabet (Σ, σ), transliterated as ‘s.’.
The eighteenth star in a constellation.
In mathematics, the Greek symbol sigma represents a summation operator.
Relating to or denoting an electron or orbital with zero angular momentum around an internuclear axis.
How to use Sigma in a sentence?
- These conical intersections are fundamentally different from the ‘H-vinyl’ structures found in simple alkenes because they involve the interaction of four sigma electrons, as opposed to two pi electrons and two sigma electrons.
- He coined this latter term and employed the Greek letter lower case sigma to denote its population parameter.
- Sigma Octantis.
Meaning of Sigma & Sigma Definition