- a negatively charged ion, as one attracted to the anode in electrolysis.
- any negatively charged atom or group of atoms (opposed to cation).
Origin of anion
Examples from the Web for anion
Historical Examples of anion
One of these is always composed of oxygen and hydrogen and is the anion.An Elementary Study of Chemistry
Now, one question: Has the news of the death of the ram of Anion reached you?
The king repaired in state to the temple of Anion, seized the priests who professed these seditious beliefs, and burnt them alive.
The Nile beyond surrounded an island, where flourished the well-kept sacred grove of Anion.
In a few minutes the priest of Anion and the chief of the kolchytes were being carried towards the valley in their litters.
- a negatively charged ion; an ion that is attracted to the anode during electrolysisCompare cation
Word Origin for anion
"a negatively charged ion, which moves toward the anode (q.v.) during electrolysis," 1834, proposed by the Rev. William Whewell (1794-1866), English polymath, and published by English physicist Michael Faraday, from Greek anion "(thing) going up," neuter past participle of anienai "go up," from ana "up" (see ana-) + ienai "go" (see ion).
- A negatively charged ion, especially one that migrates to the anode in electrolysis.
- An ion with net negative charge, having more electrons than protons. In electrolysis, anions migrate to a positively charged anode. Compare cation.