pos·i·tron
noun/ˈpɒzɪtrɒn/
/ˈpɑːzɪtrɑːn/
(physics)- a particle in an atom which has the same mass as an electron and an equal but positive charge
正电子；阳电子 Wordfinder- antiparticle
- atom
- electron
- ion
- neutron
- nucleus
- particle
- positron
- proton
- valency
Word Origin1930s: from positive + -tron.