an·i·on ( n    n)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 Indo-European roots.] an i·onic (- n k) adj.an i·oni·cal·ly adv. |
anion [an-eye-on]
Noun
an ion with negative charge [Greek ana- up + ienai to go]
anionic adj
| anion (nn) An ion with net negative charge, having more electrons than protons. In electrolysis, anions migrate to a positively charged anode. Compare cation. |
ThesaurusLegend: Synonyms Related Words Antonyms
| Noun | 1. | anion - a negatively charged ion 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 hydroxide ion, hydroxyl ion - the anion OH having one oxygen and one hydrogen atom superoxide anion, superoxide - the univalent anion O2-; "much of the O2 supporting cellular respiration is reduced to the superoxide anion O2-" |
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