sigma

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These population changes are induced by the orbital interactions among the dpippi bonding orbital of the TiNSiMe3 moiety, the Ti dz2 orbital and the CH sigma-bonding and sigma*-antibonding orbitals of methane.

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Definitions (11)

Toggle American Heritage definitions American Heritage Dictionary (3)

  1. noun The 18th letter of the Greek alphabet. See Table at alphabet.
  2. noun A sigma factor.
  3. noun A sigma baryon.

Toggle Century definitions Century Dictionary (6)

Toggle GNU Webster definitions GNU Webster's 1913 (1)

Toggle WordNet definitions WordNet (1)

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Examples (45)

  • A contract had been let for the sigma-field energy-dome of a new township to be built six kilometers beneath the planet's South Polar Sea. —  The Many-Coloured Land -- Julian May
  • Proactively "From the Sea"; leveraging the littoral best practices for a paradigm breaking six-sigma best business case in the global commons, rightsizing the core values supporting our mission statement via the 5-vector model through cultural diversity. —  CDR Salamander
  • Proactively "From the Sea"; leveraging the littoral best practices for a paradigm breaking six-sigma best business case in the global commons, rightsizing the core values supporting our mission statement via the 5-vector model. —  CDR Salamander
  • Now, sigma (y) = 63 * 6 = > sigma (x) = 63 * 6 / 0.7 = 540
  • Now we have sigma (x^2) = > we can find sigma (y^2) = > we can find variance (y) and std dev (y).
 

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Etymologies (2)

Toggle American Heritage etymologies American Heritage Dictionary (1)

  1. Greek sīgma, of Phoenician origin; see smk in Semitic roots.

Toggle Century etymologies Century Dictionary (1)

  1. from Latin sigma, from Greek σίγμα.
 

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/ˈsɪgmə/
by American Heritage

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