The definition of an electrically charged atom or group of atoms.(noun)
An example of an ion is an atom of hydrogen that has gained an electron.
See ion in Webster's New World College Dictionary
Origin: arbitrary use (by Michael Faraday) of Gr ion, neut. of iōn, prp. of ienai, to go < IE base *wei-, to go, chase after > L via, way
Origin: < Fr or L: Fr -ion < L -io, nom., (gen. -ionis)
See ion in American Heritage Dictionary 4
Origin: Greek ion, something that goes
Origin: , neuter present participle of ienai, to go; see ei- in Indo-European roots.
Origin: Middle English
Origin: , from Old French
Origin: , from Latin -iō, -iōn-, n. suff.
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