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[dahy-pohl] /ˈdaɪˌpoʊl/
Physics, Electricity. a pair of electric point charges or magnetic poles of equal magnitude and opposite signs, separated by an infinitesimal distance.
Physical Chemistry. a polar molecule.
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.
1910-15; di-1 + pole2
Related forms
dipolar, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for dipole
  • Microwaves heat water because they are resonant with lots of tightly spaced vibrational modes of the molecule's dipole moment.
  • All but one of the dipole wire elements in a television aerial, for example, are parasitic.
  • Yes it is the exact same thing except for the fact that it may be a dipole system instead of a single coil and a secondary.
  • Description of plans for a dedicated experiment to measure the muon electric dipole moment.
  • Would you please explain what dipoles are, and what dipole dipole interactions.
  • The temporary dipole and the induced dipoles are then attracted to each other.
British Dictionary definitions for dipole


two electric charges or magnetic poles that have equal magnitudes but opposite signs and are separated by a small distance
a molecule in which the centre of positive charge does not coincide with the centre of negative charge
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
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
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Contemporary definitions for dipole
noun's 21st Century Lexicon
Copyright © 2003-2014, LLC
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dipole in Science
  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.

  3. 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 © 2002. Published by Houghton Mifflin. All rights reserved.
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