anion


noun Physical Chemistry.

  1. a negatively charged ion, as one attracted to the anode in electrolysis.
  2. any negatively charged atom or group of atoms (opposed to cation).

noun

  1. a negatively charged ion; an ion that is attracted to the anode during electrolysisCompare cation
n.

“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).

n.

  1. A negatively charged ion, especially one that migrates to the anode in electrolysis.

  1. An ion with net negative charge, having more electrons than protons. In electrolysis, anions migrate to a positively charged anode. Compare cation.

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