# quadrupole

> English word · Noun · frequency rank #79,893

## Definitions
1. A distribution of either electric charge or magnetization equivalent to two dipoles that point in opposite directions.
2. A magnet with two north poles and two south poles, used to focus a beam of particles.

## Etymology
From quadru- + pole.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/quadrupole