multipole

In physics, a multipole refers to a system with more than one pole. This concept is often used to describe magnetic or electric fields.1

A magnetic dipole is a fundamental unit, essentially a tiny magnet or a flow of electric charge around a loop. Examples include circulating electrons, spinning electrons, and rotating atomic nuclei. The strength of a magnetic dipole is measured by its magnetic moment, often denoted by the Greek letter mu ((\mu)). This moment indicates how strongly a dipole aligns with an external magnetic field.2

A quadrupole is a system composed of two dipoles with equal but oppositely directed moments. The term "multipolar" describes something having several poles or centers of power.34