quantum entanglement

noun

: 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

Examples of quantum entanglement in a Sentence

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With the latest project, Xairos is positioning itself as a company looking to deliver highly accurate and secure timing services using quantum entanglement and its proprietary Quantum Time Transfer (QTT) technology. Bojan Stojkovski, Interesting Engineering, 30 May 2026 To understand the enzyme, researchers must follow the behavior of many electrons that are all linked together via quantum entanglement. Quanta Magazine, 29 May 2026 Well, that and quantum teleportation, which is the reason that quantum entanglement suffuses this entire field to this day. Joseph Howlett, Scientific American, 31 Mar. 2026 That quantum entanglement extends through different times seems itself a strong argument against time as an absolute. Christian Wiman, Harpers Magazine, 30 Dec. 2025 See All Example Sentences for quantum entanglement

Word History

First Known Use

1991, in the meaning defined above

Time Traveler
The first known use of quantum entanglement was in 1991

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Cite this Entry

“Quantum entanglement.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/quantum%20entanglement. Accessed 5 Jun. 2026.

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