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1. (n.) ion
an atom or atom group electrically charged by the loss or gain of electrons, represented by a plus or a minus sign, as a cation (Na+, Ca++) or anion (Cl−).
2. ion
one of the electrically charged particles formed in a gas by electric discharge.
Etymology: (< Gk ión going, neut. prp. of iénai to go; term introduced by Michael Faraday in 1834)
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| Definition of 'ion' |
Princeton's WordNet |
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1. (noun) ion
a particle that is electrically charged (positive or negative); an atom or molecule or group that has lost or gained one or more electrons
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| Definition of 'ion' |
Webster Dictionary |
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1. (noun) ion
one of the elements which appear at the respective poles when a body is subjected to electro-chemical decomposition. Cf. Anion, Cation
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| Definitions of 'ion' |
The Nuttall Encyclopedia |
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1. ion
in the Greek mythology son of Apollo by Creusa, and exposed by her in the cave where she bore him, but who was conveyed by the god to Delphi and educated by a priestess, and was afterwards owned by his mother, and became the ancestor of the Ionians, her husband, Xuthus, being kept throughout in the dark.
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Definitions of ion 
