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subatomic particle
- a particle smaller than an atom (e.g., a neutron) or a cluster of such particles (e.g., an alpha particle).
noun: subatomic particle, plural noun: subatomic particles
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- IPA[ˌsəbəˈtämik ˈpärdəkəl]
- a particle smaller than an atom (e.g., a neutron) or a cluster of such particles (e.g., an ...
Oxford American Dictionary