Definition of "octopole" [octopole]

• A multipole configuration with eight equal charges arranged in a circular pattern. (noun)
• Any configuration or analysis having eightfold symmetry. (noun)

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• "If the microwave background at the multipoles is correlated with the geometry and direction of motion of the solar system, and the incoherence manifests via octopole and quadrupole components in a bound universe, then there should be a center of gravity at the center of the visible universe that correlates to the ecliptic."
• "What is perhaps not so widely discussed is that two of the lowest multipoles - the quadrupole and octopole - are tightly correlated in the sense that the quadrupole plane and the three octopole planes are aligned."