Definition - quantum jump

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quantum jump
  1. a sudden large increase or advance; "this may not insure success but it will represent a quantum leap from last summer"
  2. (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
  3. a sudden large increase or advance; "this may not insure success but it will represent a quantum leap from last summer"
  4. (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