dipole moment


Origin:
1930–35

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Collins
World English Dictionary
dipole moment
 
n
chem μ a measure of the polarity in a chemical bond or molecule, equal to the product of one charge and the distance between the charges

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American Heritage
Medical Dictionary

dipole moment di·pole moment (dī'pōl')
n.

  1. The product of either charge in an electric dipole with the distance separating them.

  2. The product of the strength of either pole in a magnetic dipole with the distance separating them.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
dipole moment  
  1. The product of the strength of either of the charges in an electric dipole and the distance separating the two charges. It is expressed in coulomb meters. Dipole moment is a vector quantity; its direction is defined as toward the positive charge.

  2. The product of the strength of either of the poles in an magnetic dipole and the distance separating the two poles. Dipole moment is a vector quantity; its direction is defined as toward the magnetic north pole. Since magnetic monopoles apparently do not exist, the magnetic moment is usually calculated by analysis of the flow of electric current inducing the magnetic field.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
The dipole moment of an object is a measure of how electrical charge is
  distributed within it.
Potential as a greenhouse gas can be determined by the dipole moment of a gas.
Microwaves heat water because they are resonant with lots of tightly spaced
  vibrational modes of the molecule's dipole moment.
Description of plans for a dedicated experiment to measure the muon electric
  dipole moment.
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