proton
noun /ˈprəʊtɒn/
/ˈprəʊtɑːn/
(physics- a very small piece of matter (= a substance) with a positive electric charge that forms part of the nucleus (= central part) of an atom
see also electron, neutron质子 WordfinderTopics Physics and chemistryc2- antiparticle
- atom
- electron
- ion
- neutron
- nucleus
- particle
- positron
- proton
- valency
词源1920s: from Greek, neuter of prōtos ‘first’.