quantum leap

noun

Definition of quantum leap

  1. :  an abrupt change, sudden increase, or dramatic advance

Examples of quantum leap in a Sentence

  1. Prices have taken a quantum leap upward.

  2. The new drug is a quantum leap in the fight against cancer.

First Known Use of quantum leap

1956


QUANTUM LEAP Defined for English Language Learners

quantum leap

noun

Definition of quantum leap for English Language Learners

  • : a sudden large change, development, or improvement

Learn More about quantum leap


Seen and Heard

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

Love words? Need even more definitions?

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

WORD OF THE DAY

set in a bent position

Get Word of the Day daily email!

Test Your Vocabulary

The Emoji Quiz

  • emoji-the-quiz
  • What phase of the moon is this: 🌖 ?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Word Winder's CrossWinder

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!