anion Meaning, Definition & Usage

  1. noun a negatively charged ion

WordNet

An"i*on noun
Etymology
Gr. , neut. , p. pr. of to go up; up + to go.
Definitions
  1. (Chem.) An electro-negative element, or the element which, in electro-chemical decompositions, is evolved at the anode; -- opposed to cation. Faraday.

Webster 1913