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The principle stating that an electric current induced by a source such as a changing magnetic field always creates a counterforce opposing the force inducing it. The law accounts for such phenomena as diamagnetism and the electrical properties of inductors.
[After Heinrich Friedrich Emil Lenz (1804-1865), German physicist born in Livonia who formulated the principle.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(General Physics) physics the principle that the direction of the current induced in a circuit by a changing magnetic field is such that the magnetic field produced by this current will oppose the original field
[C19: named after H. F. E. Lenz (1804–65), German physicist]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014