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单词 antiparticle
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WordReference Random House Learner's Dictionary of American English © 2024
an•ti•par•ti•cle /ˈæntiˌpɑrtɪkəl, ˈæntaɪ-/USA pronunciation   n. [countable]
  1. Physicsan atomic particle whose properties are identical in size to those of a specific elementary particle but are of opposite sign.

WordReference Random House Unabridged Dictionary of American English © 2024
an•ti•par•ti•cle  (an′tē pär′ti kəl, an′tī-),USA pronunciation n. [Physics.]
  1. Physicsa particle all of whose properties, as mass, spin, or charge, have the same magnitude as but, where appropriate, the opposite sign of a specific elementary particle;
    neutral pions, photons, and gravitons are considered to be their own antiparticles:The positron is the antiparticle of the electron.Cf. antimatter, annihilation (def. 3).
  • anti- + particle 1930–35

Collins Concise English Dictionary © HarperCollins Publishers::
antiparticle /ˈæntɪˌpɑːtɪkəl/ n
  1. any of a group of elementary particles that have the same mass and spin as their corresponding particle but have opposite values for all other nonzero quantum numbers. When a particle collides with its antiparticle, mutual annihilation occurs
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更新时间：2025/8/1 5:24:08