Found 2 items, similar to anion.
English → English (WordNet) Definition: anion anion n : a negatively charged ion
English → English (gcide) Definition: Anion Anion \An"i*on\, n. [Gr. ?, neut. ?, p. pr. of ? to go up; ? up + ? to go.] (Chem.) 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]