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| neutretto (indecl; 1. the neutrino associated with the muon [an elementary particle with a negative charge and a half-life of 2 microseconds]; 2. (formerly) any of various hypothetical neutral particles) | |||
| neutral meson; neutretto | |||
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| neutretto (indecl; 1. the neutrino associated with the muon [an elementary particle with a negative charge and a half-life of 2 microseconds]; 2. (formerly) any of various hypothetical neutral particles) | |||
| neutral meson; neutretto | |||