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tron |
Grep of noun tron antielectron antineutron betatron bevatron citron cosmotron cyclotron electron elytron free electron genus rachycentron klystron magnetron matron mesotron negatron neutron patron photoelectron plectron police matron positron quercitron rachycentron synchrocyclotron synchrotron trondheim valence electron
tron definition
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