quantum_jump
1. [ noun ] a sudden large increase or advance
Synonyms: quantum_leap
Examples:

"this may not insure success but it will represent a quantum leap from last summer"

Related terms: jump
2. [ noun ] (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
Related terms: leap physics
Similar spelling:   quantum_leap
  quantum_physics
  quantum_theory