quantum entanglement


Definition of quantum entanglement

: a property of a set of subatomic particles whereby a quantum characteristic (such as spin or momentum) of one particle is directly and immediately correlated with the equivalent characteristic of the others regardless of separation in space In quantum entanglement, subatomic particles maintain a relationship—for instance, vibrating when the other vibrates—even when separated and even if they are at great distances from each other.— Sean Hamill Quantum entanglement occurs when two systems share a common quantum mechanical state. Such systems also share a common fate, even if they become physically quite separated. The results of a measurement performed on one will determine the results of future measurements on the second.— Claudia Tesche

First Known Use of quantum entanglement

1991, in the meaning defined above

Learn More About quantum entanglement

Time Traveler for quantum entanglement

Time Traveler

The first known use of quantum entanglement was in 1991

See more words from the same year

Dictionary Entries Near quantum entanglement

quantum electronics

quantum entanglement

quantum-equivalence law

See More Nearby Entries 

Statistics for quantum entanglement

Cite this Entry

“Quantum entanglement.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/quantum%20entanglement. Accessed 27 Sep. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon


Test Your Vocabulary

Commonly Confused Words Quiz

  • vector image of a face with thought expression
  • I went to the ______ store to buy a birthday card.
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

Universal Daily Crossword

A daily challenge for crossword fanatics.

Love words? Need even more definitions?

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