Definition of antiparticle in English:


Line breaks: anti|par¦ticle
Pronunciation: /ˈantɪˌpɑːtɪk(ə)l


  • A subatomic particle having the same mass as a given particle but opposite electric or magnetic properties. Every kind of subatomic particle has a corresponding antiparticle, e.g. the positron has the same mass as the electron but an equal and opposite charge.
    More example sentences
    • Positively charged beta particles, the antiparticle of electrons, are called positrons.
    • Some neutral particles such as photons are their own antiparticles, while others like neutrons have antiparticles with opposite magnetic moments.
    • Note that subatomic particles sometimes have antiparticles, with opposite charge and spin, that are the same ones going backwards in time.

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