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elementary particle [elementary particles]▼◼◼◼noun[UK: ˌel.ɪ.ˈment.ər.i ˈpɑː.tɪk.l̩] [US: ˌel.ɪ.ˈment.ər.i ˈpɑːr.tək.l̩]
fundamental particle▼◼◼◻noun
lepton [leptons]▼◼◼◼noun[UK: lˈeptən] [US: lˈeptən]
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