from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Abrupt change from one energy level to another, especially such a change in the orbit of an electron with the loss or gain of a quantum of energy.
- n. A quantum leap.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a sudden large increase or advance
- n. (physics) an abrupt transition of an electron or atom or molecule from one quantum state to another with the emission or absorption of a quantum
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