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quantum jump
quan·tum jump (plural quan·tum jumps)


noun 
Definition:
 
1. sudden change of energy state: the sudden transition of an atom or particle from one energy state to another
2. 
Same as  quantum leap
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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