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monopole

[mon-uh-pohl]
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noun
  1. magnetic monopole.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for monopole

monopole

noun physics
  1. a magnetic pole considered in isolation
  2. Also called: magnetic monopole a hypothetical elementary particle postulated in certain theories of particle physics to exist as an isolated north or south magnetic pole
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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

monopole in Science

monopole

[mŏnə-pōl′]
  1. The minimal region for which lines of force, as from an electric or magnetic field, either all enter or all leave the region. Particles with electric charge, such as electrons, are monopoles; though magnetic fields can behave as if generated by sets of monopoles (as in the case of magnetic dipoles), it is not known whether isolable magnetic monopoles exist.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.