ion
noun /ˈaɪən/, /ˈaɪɒn/
/ˈaɪən/, /ˈaɪɑːn/
(physics or chemistry)- an atom or a molecule with a positive or negative electric charge caused by its losing or gaining one or more electronsWordfinderTopics Physics and chemistryc2
- antiparticle
- atom
- electron
- ion
- neutron
- nucleus
- particle
- positron
- proton
- valency
Word Originmid 19th cent.: from Greek, neuter present participle of ienai ‘go’.