Skip to definition.
Get the FREE one-click dictionary software for Windows or the iPhone/iPad and Android apps

Noun: quadrupole  'kwó-dru,pówl
  1. (physics) a distribution with four charges or similar, arranged similar to a 2x2 array with (+ -) on top of (- +); the most large-scale anisotropic component of a distribution function with no monopole or dipole

Derived forms: quadrupoles

Encyclopedia: Quadrupole