| NOUN | object | antiparticle | a particle that has the same mass as another particle but has opposite values for its other properties |
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| Meaning | A particle that has the same mass as another particle but has opposite values for its other properties; interaction of a particle and its antiparticle results in annihilation and the production of radiant energy. | |
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| Broader | elementary particle, fundamental particle | (physics) a particle that is less complex than an atom |
| Substance of | antimatter | Matter consisting of elementary particles that are the antiparticles of those making up normal substances |
| Spanish | antipartícula | |
| Catalan | antipartícula | |
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