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dipole

[dahy-pohl] /ˈdaɪˌpoʊl/
noun
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.
3.
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
1910-1915
1910-15; di-1 + pole2
Related forms
dipolar, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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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

dipole

/ˈdaɪˌpəʊl/
noun
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
3.
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

See polar molecule

Dictionary.com's 21st Century Lexicon
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dipole in Science
dipole
  (dī'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.

  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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