quantum leap

noun
plural quantum leaps

Definition of quantum leap

: an abrupt change, sudden increase, or dramatic advance

Note: Quantum leap is rarely used in scientific contexts, but it originated as a synonym of quantum jump, which describes an abrupt transition (as of an electron, an atom, or a molecule) from one discrete energy state to another.

Examples of quantum leap in a Sentence

Prices have taken a quantum leap upward. The new drug is a quantum leap in the fight against cancer.

Recent Examples on the Web

Liuget, 29, is part of the Raiders’ plan to apply pressure up the middle, which in theory will cause a ripple effect throughout the defense that will result in a quantum leap from their abysmal 13-sack total in 2018. Jerry Mcdonald, The Mercury News, "Raiders’ newest acquisition Corey Liuget: ‘I’m in rare form now’," 26 Aug. 2019 By making a kind of high-speed movie of a quantum leap, the work reveals that the process is as gradual as the melting of a snowman in the sun. Philip Ball, WIRED, "Physicists See a Quantum Leap, Halt It, and Reverse It," 9 June 2019 By making a kind of high-speed movie of a quantum leap, the work reveals that the process is as gradual as the melting of a snowman in the sun. Wired, "Physicists See a Quantum Leap, Halt It, and Reverse It," 9 June 2019 By making a kind of high-speed movie of a quantum leap, the work reveals that the process is as gradual as the melting of a snowman in the sun. Quanta Magazine, "Quantum Leaps, Long Assumed to Be Instantaneous, Take Time," 5 June 2019 But the real quantum leap for power-driving screws coincided with the introduction of the cordless drill/driver, the most popular portable power tool ever invented. Joseph Truini, Popular Mechanics, "When To Use Nails Vs. Screws," 6 Aug. 2019 True, the rookies must make a quantum leap and the line’s interior is below average, but the line no longer leaves Bill O’Brien feeling compelled to employ seven-man protections on nearly every dropback. Andy Benoit, SI.com, "Deshaun Watson Can Be Even Better Behind an Improved Offensive Line," 25 July 2019 Miller has gotten bigger and stronger, and the Raiders are counting on him taking a quantum leap in terms of production after playing most of his rookie season on a bum knee. Jerry Mcdonald, The Mercury News, "Raiders mailbag: What’s the prognosis for keeping Derek Carr upright?," 23 July 2019 There will be an initial dip in concession revenue, but there should be a quantum leap forward in customer satisfaction. Mark Faller, azcentral, "A to-do list for the Arizona Coyotes' new owner Alex Meruelo," 19 June 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'quantum leap.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of quantum leap

1956, in the meaning defined above

Keep scrolling for more

Learn More about quantum leap

Statistics for quantum leap

Last Updated

17 Sep 2019

Look-up Popularity

Time Traveler for quantum leap

The first known use of quantum leap was in 1956

See more words from the same year

Keep scrolling for more

More Definitions for quantum leap

quantum leap

noun

English Language Learners Definition of quantum leap

: a sudden large change, development, or improvement

More from Merriam-Webster on quantum leap

Rhyming Dictionary: Words that rhyme with quantum leap

Thesaurus: All synonyms and antonyms for quantum leap

Comments on quantum leap

What made you want to look up quantum leap? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

authorized for issue (as a bond)

Get Word of the Day daily email!

Test Your Vocabulary

Musical Words Quiz

  • gramophone
  • Which word describes a musical performance marked by the absence of instrumental accompaniment?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Citation

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!