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quasiparticle

American

[kway-zahy-pahr-ti-kuhl, kway-sahy-, kwah-see, -zee-] / ˌkweɪ zaɪˈpɑr tɪ kəl, ˌkweɪ saɪ-, ˌkwɑ si, -zi- /

noun

Physics.

an entity, as an exciton or phonon, that interacts with elementary particles, but does not exist as a free particle.

Etymology

Origin of quasiparticle

First recorded in 1955–60; quasi- + particle

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

quasiparticle

Although it behaves like a single particle, this quasiparticle actually arises from the collective motion of the impurity and the particles around it.

From Science Daily ● Jul. 9, 2026

To overcome that problem, Zhen's team developed a special quasiparticle called an exciton-polariton.

From Science Daily ● May 19, 2026

Inside a stark black building with tinted windows, Google researchers attempt to engineer the quasiparticle on supercooled chips encased in chilling systems that look like chandeliers.

From Science Magazine ● Dec. 20, 2023

The search for the Majorana quasiparticle is following a similar dynamic.

From Science Magazine ● Dec. 20, 2023

In such normal metals, each quasiparticle, or discrete unit, of charge is the product of incalculable tiny interactions between countless electrons.

From Science Daily ● Nov. 23, 2023

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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023