n. A negatively charged ion, especially the ion that migrates to an anode in electrolysis. [From Greek, neuter present participle of anienai, to go up : ana-, ana- + ienai, to go; see ei- in the Appendix of Indo-European roots.] an′i·onic (-ŏnĭk) adj. an′i·oni·cal·ly adv. |
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