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neutron |
2 definitions found From WordNet r 1.6 [wn]: neutron n : an elementary particle with 0 charge and mass about equal to a proton; enters into the structure of the atomic nucleus From Elements database 20001107 [elements]: neutron Weight: 1.6749286*10^-27kg A neutral hadron that is stable in the atomic nucleus but decays into a protron, an electron and an antineutrino with a mean life of 12 minutes outside the nucleus. Neutrons exist in all atomic nuclei except normal hydrogen. Reported in 1932 by James Chadwick.
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