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Definition of Anion
1. Noun. A negatively charged ion.
Generic synonyms: Ion
Specialized synonyms: Hydroxide Ion, Hydroxyl Ion, Superoxide, Superoxide Anion
Derivative terms: Anionic
Specialized synonyms: Hydroxide Ion, Hydroxyl Ion, Superoxide, Superoxide Anion
Derivative terms: Anionic
Definition of Anion
1. n. An electro- negative element, or the element which, in electro-chemical decompositions, is evolved at the anode; -- opposed to cation.
Definition of Anion
1. a negatively charged ion [n -S] : ANIONIC [adj]
Medical Definition of Anion
1. A negatively-charged ion. (09 Oct 1997)