alpha particlenoun [ C ]
uk/ˈæl.fə ˌpɑː.tɪ.kəl/us/ˈæl.fə ˌpɑːr.t̬ə.kəl/specializedan extremely small piece of matter with a positive electrical charge, produced when a radioactive atom is broken down, usually in a nuclear reaction
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Physics: atoms, molecules & sub-atomic particles
- acceptor
- antilepton
- antimatter
- antineutrino
- antiparticle
- cation
- disaccharide
- elementary particle
- intramolecular
- ion
- ionize
- lepton
- Lewis structure
- macromolecule
- neutron
- quark
- relative molecular mass
- strong force
- subatomic particle
- subunit
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Physics: radiation & radioactivity