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diamagnetic

[dahy-uh-mag-net-ik]
adjective Physics.
  1. of or relating to a class of substances, as bismuth and copper, whose permeability is less than that of a vacuum: in a magnetic field, their induced magnetism is in a direction opposite to that of iron.
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Origin of diamagnetic

First recorded in 1840–50; dia- + magnetic
Related formsdi·a·mag·net·i·cal·ly, adverbdi·a·mag·net·ism [dahy-uh-mag-ni-tiz-uh m] /ˌdaɪ əˈmæg nɪˌtɪz əm/, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for diamagnetism

diamagnetism

noun
  1. the phenomenon exhibited by substances that have a relative permeability less than unity and a negative susceptibility. It is caused by the orbital motion of electrons in the atoms of the material and is unaffected by temperatureCompare ferromagnetism, paramagnetism
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diamagnetic

adjective
  1. of, exhibiting, or concerned with diamagnetism
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Derived Formsdiamagnetically, adverb
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

diamagnetism in Science

diamagnetism

[dī′ə-măgnĭ-tĭz′əm]
  1. The property of being repelled by both poles of a magnet. Most substances commonly considered to be nonmagnetic, such as water, are actually diamagnetic. Though diamagnetism is a very weak effect compared with ferromagnetism and paramagnetism, it can be used to levitate objects. Compare ferromagnetism paramagnetism. See also Lenz's law.
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Related formsdiamagnetic adjective (dī′ə-măg-nĕtĭk)
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.