Definitions

1. adjective

Relating to or derived from sulphur.

“The sulphonic acid is commonly used in various chemical reactions.”

2. adjective

Having the properties of sulphur, especially in relation to solubility.

“The sulphonic compounds are poorly soluble in water.”

3. noun

A salt or ester of a sulphonic acid.

“The sulphonic is commonly used in the production of dyes.”