| 单词 | meson |
| 释义 | Word Frequency meson(ˈmiːzɒn) noun any of a group of elementary particles, such as a pion or kaon, that usually has a rest mass between those of an electron and a proton, and an integral spin. They are responsible for the force between nucleons in the atomic nucleus Former name: mesotron. See also muon Derived forms mesonic (meˈsonic) or mesic (ˈmesic) adjective Word origin C20: from meso- + -on |
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