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  1. Dictionary
    quantum leap
    /ˌkwɒntəm ˈliːp/

    noun

    • 1. a huge, often sudden, increase or advance in something: "there has been a quantum leap in the quality of wines marketed in the UK"
  2. The meaning of QUANTUM LEAP is an abrupt change, sudden increase, or dramatic advance. How to use quantum leap in a sentence.

  3. a great improvement or important development in something: The appointment of a female director is a quantum leap for women's equality. SMART Vocabulary: related words and phrases. Success and achievements. a feather in your cap idiom. accomplishment. achievement test. ascension. ascent. belt. boom. feat. fruition.

  4. a great improvement or important development in something: The appointment of a female director is a quantum leap for women's equality. SMART Vocabulary: related words and phrases. Success and achievements. a feather in your cap idiom. accomplishment. achievement test. ascension. ascent. belt. boom. feat. fruition.

  5. Quantum leap definition: a sudden highly significant advance; breakthrough. See examples of QUANTUM LEAP used in a sentence.

  6. A sudden, very noticable and significant advance. What's the origin of the phrase 'Quantum leap'? Before quantum leaps there were quantum jumps, which had the same meaning.

  7. /ˌkwɒntəm ˈliːp/ /ˌkwɑːntəm ˈliːp/ (also less frequent quantum jump) a sudden, great and important change, improvement or development. This discovery marks a quantum leap forward in the fight against cancer. There has been a quantum leap in profits since 2015. Take your English to the next level.

  8. An advance or sudden change is a quantum leap. You could say that schools in the United States have made a quantum leap in the availability of technology over the past ten years, or that a quantum leap in access to clean water is desperately needed in many developing countries.

  9. a sudden, large increase or improvement in something: [ usually singular ] a quantum leap in information technology. (Definition of quantum leap from the Cambridge Learner's Dictionary © Cambridge University Press) Translations of quantum leap. in Chinese (Traditional) 飛躍,重大進展… See more. in Chinese (Simplified) 飞跃,重大进展… See more. in Spanish.

  10. plural quantum leaps. Britannica Dictionary definition of QUANTUM LEAP. [count] : a sudden large change, development, or improvement. Prices have taken a quantum leap upward. The new drug is a quantum leap in the fight against cancer. — called also quantum jump.

  11. noun. a sudden highly significant advance; breakthrough. Collins English Dictionary. Copyright © HarperCollins Publishers. Word origin. C20: from its use in physics meaning the sudden jump of an electron, atom, etc, from one energy level to another. Examples of 'quantum leap' in a sentence. quantum leap.