[ dahy-pohl ]

  1. Physics, Electricity. a pair of electric point charges or magnetic poles of equal magnitude and opposite signs, separated by an infinitesimal distance.

  2. Physical Chemistry. a polar molecule.

  1. Also called dipole antenna. Radio, Television. an antenna of a transmitter or receiving set consisting of two equal rods extending in opposite direction from the connection to the lead-in wire.

Origin of dipole

First recorded in 1910–15; di-1 + pole2

Other words from dipole

  • di·po·lar, adjective

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

British Dictionary definitions for dipole


/ (ˈdaɪˌpəʊl) /

  1. two electric charges or magnetic poles that have equal magnitudes but opposite signs and are separated by a small distance

  2. a molecule in which the centre of positive charge does not coincide with the centre of negative charge

  1. Also called: dipole aerial a directional radio or television aerial consisting of two equal lengths of metal wire or rods, with a connecting wire fixed between them in the form of a T

Derived forms of dipole

  • dipolar, adjective

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for dipole


[ pōl′ ]

  1. A pair of electric charges or magnetic poles, of equal magnitude but of opposite sign or polarity, separated by a small distance.

  2. A molecule having two such charges or poles.

  1. An antenna consisting of two rods of equal length extending outward in a straight line. Dipole antennas are usually used for frequencies below 30 megahertz.

The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.