- sulphione
- Sulphion Sul"phi*on, n. [Sulpho- + ion.] (Chem.) A hypothetical radical, {SO4}, regarded as forming the acid or negative constituent of sulphuric acid and the sulphates in electrolytic decomposition; -- so called in accordance with the binary theory of salts. [Written also {sulphione}.] [1913 Webster]
The Collaborative International Dictionary of English. 2000.