Bible Dictionaries
Sulphion

Webster's Dictionary

(n.) 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.

Bibliography Information
Webster, Noah. Entry for 'Sulphion'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​s/sulphion.html. 1828.