antiparticle

Noun
  1. 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 (synset 109222782)
    is a type of: elementary particle, fundamental particle - (physics) a particle that is less complex than an atom; regarded as constituents of all matter
    substance meronym: antimatter - matter consisting of elementary particles that are the antiparticles of those making up normal substances

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