pion definition

  • noun:
    • A semistable meson created in a choice of a neutral type with a mass 264 times compared to an electron and a mean duration of 8.4 × 10-17 seconds or in a positively or negatively recharged kind with a mass 273 times that of an electron and a mean duration of 2.6 × 10-8 moments. Also called pi meson. See dining table at subatomic particle.
    • Any of three semistable mesons, having good, bad or basic fee, composed of up and down quarks/antiquarks.
    • a meson involved in keeping the nucleus together; produced because of high-energy particle collision

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