Word Study
anion
CIDE DICTIONARY
anion, n. [Gr. , neut. , p. pr. of to go up; up + to go.].
An electro-negative atom or group of atoms, or the element which, in electro-chemical decompositions, is evolved at the anode; -- opposed to cation. Faraday. [1913 Webster]
OXFORD DICTIONARY
anion, n. a negatively charged ion; an ion that is attracted to the anode in electrolysis (opp. CATION).
Etymology
ANA- + ION
THESAURUS
anion
acid, acidity, agent, alkali, alkalinity, alloisomer, antacid, atom, base, biochemical, cation, chemical, chemical element, chromoisomer, compound, copolymer, dimer, electrocoating, electroetching, electrogalvanization, electrogilding, electrograving, electrolysis, electrolyte, electroplating, element, galvanization, heavy chemicals, high polymer, homopolymer, hydracid, inorganic chemical, ion, ionization, ionogen, isomer, macromolecule, metamer, molecule, monomer, neutralizer, nonacid, nonelectrolyte, organic chemical, oxyacid, polymer, pseudoisomer, radical, reagent, sulfacid, trimerFor further exploring for "anion" in Webster Dictionary Online