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quantum jump

noun
1.
Physics. an abrupt transition of a system described by quantum mechanics from one of its discrete states to another, as the fall of an electron in an atom to an orbit of lower energy.
2.
any sudden and significant change, advance, or increase.
Also called quantum leap.
Origin of quantum jump
1925-1930
1925-30
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for quantum jump

quantum leap

noun
1.
a sudden highly significant advance; breakthrough
Word Origin
C20: from its use in physics meaning the sudden jump of an electron, atom, etc from one energy level to another
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
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quantum jump in Science
quantum jump  
A change from one quantum state to another, as when an electron orbiting a nucleus moves from one shell to another with the loss or gain of a quantum of energy.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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18
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