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quasiparticle

[ kwey-zahy-pahr-ti-kuhl, kwey-sahy-, kwah-see, -zee- ]

noun

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


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Word History and Origins

Origin of quasiparticle1

First recorded in 1955–60; quasi- + particle

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