• synonyms


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

Examples from the Web for diamagnetic

Historical Examples

  • These rays impinge upon a diamagnetic surface which is concave.

    Second Sight


  • A diamagnetic body is one which is not so magnetic as the medium in which it is suspended.

  • Water is diamagnetic, sulphate of iron is strongly magnetic.

  • Nitrogen is neither paramagnetic nor diamagnetic, and is equivalent to a vacuum.

  • Bodies that point equatorially, or are diamagnetic, like Faraday's heavy glass.

British Dictionary definitions for diamagnetic


  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

diamagnetic in Science


  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.